IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote attacker to traverse directories on the system. An attacker could send a speciall…

cve CVE-2026-17621 1 source, 1 claim · Watch

NVD writes:
IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot " sequences ( /.. /) to view arbitrary files on the system. the claim

Severity: MEDIUM NVD
CVSS: 5.4 NVD
Vendor: IBM NVD
Product: Langflow OSS NVD
CWE: CWE-22 NVD

How far exploitation has got

No public code known
Proof of concept
Proof of concept, verified
A Metasploit module
Exploited in the wild
Used in ransomware campaigns

Timeline

2026-09-04

first spoke of it: IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot " sequences ( /.. /) to view arbitrary files on the system.

NVD

IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot " sequences ( /.. /) to view arbitrary files on the system.

What it is to other things

affects	apple/macos NVD
affects	langflow/langflow NVD
affects	linux/linux_kernel NVD
affects	microsoft/windows NVD
made_by	apple NVD
made_by	langflow NVD
made_by	linux NVD
made_by	microsoft NVD

In words only, so not counted until a person confirms one:

made_by	`ibm` NVD says “IBM”
affects	`ibm/langflow_oss` NVD says “IBM · Langflow OSS”

Every value, with what each source said and its receipt

Property Source Said Means here

Automatable

automatable

NVD

At least one of those steps needs a person.

receipt

Source: NVD
Its words: no
Read by: field:cve.metrics.ssvcV203[].ssvcData.options[].automatable
Said since: 2026-10-06 12:31 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-10-06 12:31 UTC	no
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "cpes": [
              "cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*",
              "cpe:2.3:a:ibm:langflow_oss:1.10.2:*:*:*:*:*:*:*"
            ],
            "product": "Langflow OSS",
            "vendor": "IBM",
            "versions": [
              {
                "lessThanOrEqual": "1.10.2",
                "status": "affected",
                "version": "1.0.0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "psirt@us.ibm.com"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
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                "versionEndExcluding": "1.10.3",
                "versionStartIncluding": "1.0.0",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          },
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                "vulnerable": false
              },
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                "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1",
                "vulnerable": false
              },
              {
                "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*",
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            ],
            "negate": false,
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        "operator": "AND"
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    ],
    "cveTags": [],
    "descriptions": [
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        "lang": "en",
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      }
    ],
    "id": "CVE-2026-17621",
    "lastModified": "2026-09-10T21:17:22.333",
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            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
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            "version": "3.1"
          },
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          "impactScore": 2.5,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ],
      "ssvcV203": [
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            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-10T20:37:50.537359Z",
            "version": "2.0.3"
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    "published": "2026-09-04T17:16:55.063",
    "references": [
      {
        "source": "psirt@us.ibm.com",
        "tags": [
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          "Vendor Advisory"
        ],
        "url": "https://www.ibm.com/support/pages/node/7286293"
      }
    ],
    "sourceIdentifier": "psirt@us.ibm.com",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-22"
          }
        ],
        "source": "psirt@us.ibm.com",
        "type": "Secondary"
      }
    ]
  }
}

—

CVSS

cvss

NVD

5.4

receipt

Source: NVD
Its words: 5.4
Read by: field:cve.metrics.cvssMetricV31[type=Primary].cvssData.baseScore || field:cve.metrics.cvssMetricV31[].cvssData.baseScore
Said since: 2026-09-29 09:45 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "cpes": [
              "cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*",
              "cpe:2.3:a:ibm:langflow_oss:1.10.2:*:*:*:*:*:*:*"
            ],
            "product": "Langflow OSS",
            "vendor": "IBM",
            "versions": [
              {
                "lessThanOrEqual": "1.10.2",
                "status": "affected",
                "version": "1.0.0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "psirt@us.ibm.com"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "31E9A4AB-42A1-47C7-9945-27B65581E581",
                "versionEndExcluding": "1.10.3",
                "versionStartIncluding": "1.0.0",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          },
          {
            "cpeMatch": [
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                "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*",
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                "vulnerable": false
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1",
                "vulnerable": false
              },
              {
                "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA",
                "vulnerable": false
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ],
        "operator": "AND"
      }
    ],
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      }
    ],
    "id": "CVE-2026-17621",
    "lastModified": "2026-09-10T21:17:22.333",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
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          "impactScore": 2.5,
          "source": "psirt@us.ibm.com",
          "type": "Secondary"
        },
        {
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
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            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
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            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
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          "impactScore": 2.5,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ],
      "ssvcV203": [
        {
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          "ssvcData": {
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            "options": [
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                "technicalImpact": "partial"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-10T20:37:50.537359Z",
            "version": "2.0.3"
          }
        }
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    },
    "published": "2026-09-04T17:16:55.063",
    "references": [
      {
        "source": "psirt@us.ibm.com",
        "tags": [
          "Patch",
          "Vendor Advisory"
        ],
        "url": "https://www.ibm.com/support/pages/node/7286293"
      }
    ],
    "sourceIdentifier": "psirt@us.ibm.com",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-22"
          }
        ],
        "source": "psirt@us.ibm.com",
        "type": "Secondary"
      }
    ]
  }
}

—

CVSS vector

cvss_vector

NVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

receipt

Source: NVD
Its words: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Read by: field:cve.metrics.cvssMetricV31[type=Primary].cvssData.vectorString || field:cve.metrics.cvssMetricV31[].cvssData.vectorString
Said since: 2026-10-06 12:31 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-10-06 12:31 UTC	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "cpes": [
              "cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*",
              "cpe:2.3:a:ibm:langflow_oss:1.10.2:*:*:*:*:*:*:*"
            ],
            "product": "Langflow OSS",
            "vendor": "IBM",
            "versions": [
              {
                "lessThanOrEqual": "1.10.2",
                "status": "affected",
                "version": "1.0.0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "psirt@us.ibm.com"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*",
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                "versionEndExcluding": "1.10.3",
                "versionStartIncluding": "1.0.0",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          },
          {
            "cpeMatch": [
              {
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              },
              {
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                "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1",
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              },
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            ],
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      }
    ],
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    "lastModified": "2026-09-10T21:17:22.333",
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          "cvssData": {
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          "source": "psirt@us.ibm.com",
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            "version": "3.1"
          },
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          "type": "Primary"
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          "ssvcData": {
            "id": "CVE-2026-17621",
            "options": [
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                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "partial"
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            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-10T20:37:50.537359Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-09-04T17:16:55.063",
    "references": [
      {
        "source": "psirt@us.ibm.com",
        "tags": [
          "Patch",
          "Vendor Advisory"
        ],
        "url": "https://www.ibm.com/support/pages/node/7286293"
      }
    ],
    "sourceIdentifier": "psirt@us.ibm.com",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-22"
          }
        ],
        "source": "psirt@us.ibm.com",
        "type": "Secondary"
      }
    ]
  }
}

—

CWE

cwe

NVD

CWE-22

receipt

Source: NVD
Its words: CWE-22
Read by: field:cve.weaknesses[].description[].value
Said since: 2026-10-06 12:31 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-10-06 12:31 UTC	CWE-22
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "cpes": [
              "cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*",
              "cpe:2.3:a:ibm:langflow_oss:1.10.2:*:*:*:*:*:*:*"
            ],
            "product": "Langflow OSS",
            "vendor": "IBM",
            "versions": [
              {
                "lessThanOrEqual": "1.10.2",
                "status": "affected",
                "version": "1.0.0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "psirt@us.ibm.com"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
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                "versionEndExcluding": "1.10.3",
                "versionStartIncluding": "1.0.0",
                "vulnerable": true
              }
            ],
            "negate": false,
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          },
          {
            "cpeMatch": [
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                "vulnerable": false
              },
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                "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*",
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              }
            ],
            "negate": false,
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      }
    ],
    "id": "CVE-2026-17621",
    "lastModified": "2026-09-10T21:17:22.333",
    "metrics": {
      "cvssMetricV31": [
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          "cvssData": {
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            "attackVector": "NETWORK",
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            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
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            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
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          },
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          "impactScore": 2.5,
          "source": "nvd@nist.gov",
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      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-17621",
            "options": [
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                "exploitation": "none"
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                "automatable": "no"
              },
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                "technicalImpact": "partial"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-10T20:37:50.537359Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-09-04T17:16:55.063",
    "references": [
      {
        "source": "psirt@us.ibm.com",
        "tags": [
          "Patch",
          "Vendor Advisory"
        ],
        "url": "https://www.ibm.com/support/pages/node/7286293"
      }
    ],
    "sourceIdentifier": "psirt@us.ibm.com",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-22"
          }
        ],
        "source": "psirt@us.ibm.com",
        "type": "Secondary"
      }
    ]
  }
}

—

Exploitation

exploitation

NVD

none

No evidence of exploitation, and no public proof of concept.

receipt

Source: NVD
Its words: none
Read by: field:cve.metrics.ssvcV203[].ssvcData.options[].exploitation
Said since: 2026-10-06 12:31 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-10-06 12:31 UTC	none
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "cpes": [
              "cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*",
              "cpe:2.3:a:ibm:langflow_oss:1.10.2:*:*:*:*:*:*:*"
            ],
            "product": "Langflow OSS",
            "vendor": "IBM",
            "versions": [
              {
                "lessThanOrEqual": "1.10.2",
                "status": "affected",
                "version": "1.0.0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "psirt@us.ibm.com"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
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                "versionEndExcluding": "1.10.3",
                "versionStartIncluding": "1.0.0",
                "vulnerable": true
              }
            ],
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            "operator": "OR"
          },
          {
            "cpeMatch": [
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                "vulnerable": false
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1",
                "vulnerable": false
              },
              {
                "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA",
                "vulnerable": false
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ],
        "operator": "AND"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing \"dot dot \" sequences ( /.. /) to view arbitrary files on the system."
      }
    ],
    "id": "CVE-2026-17621",
    "lastModified": "2026-09-10T21:17:22.333",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
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            "attackVector": "NETWORK",
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            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 2.5,
          "source": "psirt@us.ibm.com",
          "type": "Secondary"
        },
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 2.5,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-17621",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "partial"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-10T20:37:50.537359Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-09-04T17:16:55.063",
    "references": [
      {
        "source": "psirt@us.ibm.com",
        "tags": [
          "Patch",
          "Vendor Advisory"
        ],
        "url": "https://www.ibm.com/support/pages/node/7286293"
      }
    ],
    "sourceIdentifier": "psirt@us.ibm.com",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-22"
          }
        ],
        "source": "psirt@us.ibm.com",
        "type": "Secondary"
      }
    ]
  }
}

—

Product

product

NVD

Langflow OSS

receipt

Source: NVD
Its words: Langflow OSS
Read by: field:cve.affected[].affectedData[].product
Said since: 2026-09-29 17:49 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-09-29 17:49 UTC	Langflow OSS
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "cpes": [
              "cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*",
              "cpe:2.3:a:ibm:langflow_oss:1.10.2:*:*:*:*:*:*:*"
            ],
            "product": "Langflow OSS",
            "vendor": "IBM",
            "versions": [
              {
                "lessThanOrEqual": "1.10.2",
                "status": "affected",
                "version": "1.0.0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "psirt@us.ibm.com"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "31E9A4AB-42A1-47C7-9945-27B65581E581",
                "versionEndExcluding": "1.10.3",
                "versionStartIncluding": "1.0.0",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          },
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E",
                "vulnerable": false
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1",
                "vulnerable": false
              },
              {
                "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA",
                "vulnerable": false
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ],
        "operator": "AND"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing \"dot dot \" sequences ( /.. /) to view arbitrary files on the system."
      }
    ],
    "id": "CVE-2026-17621",
    "lastModified": "2026-09-10T21:17:22.333",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 2.5,
          "source": "psirt@us.ibm.com",
          "type": "Secondary"
        },
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 2.5,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-17621",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "partial"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-10T20:37:50.537359Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-09-04T17:16:55.063",
    "references": [
      {
        "source": "psirt@us.ibm.com",
        "tags": [
          "Patch",
          "Vendor Advisory"
        ],
        "url": "https://www.ibm.com/support/pages/node/7286293"
      }
    ],
    "sourceIdentifier": "psirt@us.ibm.com",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-22"
          }
        ],
        "source": "psirt@us.ibm.com",
        "type": "Secondary"
      }
    ]
  }
}

—

Severity

severity

NVD

MEDIUM

From 4.0 to 6.9.

receipt

Source: NVD
Its words: MEDIUM
Read by: field:cve.metrics.cvssMetricV31[type=Primary].cvssData.baseSeverity || field:cve.metrics.cvssMetricV31[].cvssData.baseSeverity
Said since: 2026-10-06 12:31 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-10-06 12:31 UTC	MEDIUM
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "cpes": [
              "cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*",
              "cpe:2.3:a:ibm:langflow_oss:1.10.2:*:*:*:*:*:*:*"
            ],
            "product": "Langflow OSS",
            "vendor": "IBM",
            "versions": [
              {
                "lessThanOrEqual": "1.10.2",
                "status": "affected",
                "version": "1.0.0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "psirt@us.ibm.com"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "31E9A4AB-42A1-47C7-9945-27B65581E581",
                "versionEndExcluding": "1.10.3",
                "versionStartIncluding": "1.0.0",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          },
          {
            "cpeMatch": [
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                "vulnerable": false
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1",
                "vulnerable": false
              },
              {
                "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA",
                "vulnerable": false
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ],
        "operator": "AND"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing \"dot dot \" sequences ( /.. /) to view arbitrary files on the system."
      }
    ],
    "id": "CVE-2026-17621",
    "lastModified": "2026-09-10T21:17:22.333",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 2.5,
          "source": "psirt@us.ibm.com",
          "type": "Secondary"
        },
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 2.5,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-17621",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "partial"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-10T20:37:50.537359Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-09-04T17:16:55.063",
    "references": [
      {
        "source": "psirt@us.ibm.com",
        "tags": [
          "Patch",
          "Vendor Advisory"
        ],
        "url": "https://www.ibm.com/support/pages/node/7286293"
      }
    ],
    "sourceIdentifier": "psirt@us.ibm.com",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-22"
          }
        ],
        "source": "psirt@us.ibm.com",
        "type": "Secondary"
      }
    ]
  }
}

medium

Status

status

NVD

Analyzed

receipt

Source: NVD
Its words: Analyzed
Read by: field:cve.vulnStatus
Said since: 2026-09-29 09:45 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "cpes": [
              "cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*",
              "cpe:2.3:a:ibm:langflow_oss:1.10.2:*:*:*:*:*:*:*"
            ],
            "product": "Langflow OSS",
            "vendor": "IBM",
            "versions": [
              {
                "lessThanOrEqual": "1.10.2",
                "status": "affected",
                "version": "1.0.0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "psirt@us.ibm.com"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*",
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                "versionEndExcluding": "1.10.3",
                "versionStartIncluding": "1.0.0",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          },
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*",
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                "vulnerable": false
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1",
                "vulnerable": false
              },
              {
                "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA",
                "vulnerable": false
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ],
        "operator": "AND"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
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      }
    ],
    "id": "CVE-2026-17621",
    "lastModified": "2026-09-10T21:17:22.333",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 2.5,
          "source": "psirt@us.ibm.com",
          "type": "Secondary"
        },
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 2.5,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-17621",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "partial"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-10T20:37:50.537359Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-09-04T17:16:55.063",
    "references": [
      {
        "source": "psirt@us.ibm.com",
        "tags": [
          "Patch",
          "Vendor Advisory"
        ],
        "url": "https://www.ibm.com/support/pages/node/7286293"
      }
    ],
    "sourceIdentifier": "psirt@us.ibm.com",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-22"
          }
        ],
        "source": "psirt@us.ibm.com",
        "type": "Secondary"
      }
    ]
  }
}

—

Technical impact

technical_impact

NVD

partial

The attacker gains limited control, or limited information.

receipt

Source: NVD
Its words: partial
Read by: field:cve.metrics.ssvcV203[].ssvcData.options[].technicalImpact
Said since: 2026-10-06 12:31 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-10-06 12:31 UTC	partial
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "cpes": [
              "cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*",
              "cpe:2.3:a:ibm:langflow_oss:1.10.2:*:*:*:*:*:*:*"
            ],
            "product": "Langflow OSS",
            "vendor": "IBM",
            "versions": [
              {
                "lessThanOrEqual": "1.10.2",
                "status": "affected",
                "version": "1.0.0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "psirt@us.ibm.com"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
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                "versionEndExcluding": "1.10.3",
                "versionStartIncluding": "1.0.0",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          },
          {
            "cpeMatch": [
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                "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*",
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                "vulnerable": false
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1",
                "vulnerable": false
              },
              {
                "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA",
                "vulnerable": false
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ],
        "operator": "AND"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing \"dot dot \" sequences ( /.. /) to view arbitrary files on the system."
      }
    ],
    "id": "CVE-2026-17621",
    "lastModified": "2026-09-10T21:17:22.333",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
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            "availabilityImpact": "NONE",
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            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
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          "impactScore": 2.5,
          "source": "psirt@us.ibm.com",
          "type": "Secondary"
        },
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 2.5,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-17621",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "partial"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-10T20:37:50.537359Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-09-04T17:16:55.063",
    "references": [
      {
        "source": "psirt@us.ibm.com",
        "tags": [
          "Patch",
          "Vendor Advisory"
        ],
        "url": "https://www.ibm.com/support/pages/node/7286293"
      }
    ],
    "sourceIdentifier": "psirt@us.ibm.com",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-22"
          }
        ],
        "source": "psirt@us.ibm.com",
        "type": "Secondary"
      }
    ]
  }
}

—

Vendor

vendor

NVD

IBM

receipt

Source: NVD
Its words: IBM
Read by: field:cve.affected[].affectedData[].vendor
Said since: 2026-09-29 17:49 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-09-29 17:49 UTC	IBM
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "cpes": [
              "cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*",
              "cpe:2.3:a:ibm:langflow_oss:1.10.2:*:*:*:*:*:*:*"
            ],
            "product": "Langflow OSS",
            "vendor": "IBM",
            "versions": [
              {
                "lessThanOrEqual": "1.10.2",
                "status": "affected",
                "version": "1.0.0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "psirt@us.ibm.com"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "31E9A4AB-42A1-47C7-9945-27B65581E581",
                "versionEndExcluding": "1.10.3",
                "versionStartIncluding": "1.0.0",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          },
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E",
                "vulnerable": false
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1",
                "vulnerable": false
              },
              {
                "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*",
                "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA",
                "vulnerable": false
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ],
        "operator": "AND"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
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      }
    ],
    "id": "CVE-2026-17621",
    "lastModified": "2026-09-10T21:17:22.333",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
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            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 2.5,
          "source": "psirt@us.ibm.com",
          "type": "Secondary"
        },
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
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          "impactScore": 2.5,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-17621",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "partial"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-10T20:37:50.537359Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-09-04T17:16:55.063",
    "references": [
      {
        "source": "psirt@us.ibm.com",
        "tags": [
          "Patch",
          "Vendor Advisory"
        ],
        "url": "https://www.ibm.com/support/pages/node/7286293"
      }
    ],
    "sourceIdentifier": "psirt@us.ibm.com",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-22"
          }
        ],
        "source": "psirt@us.ibm.com",
        "type": "Secondary"
      }
    ]
  }
}

—

Every claim, by kind

vulnerability

zetlyn/cve-nvd · 2026-09-04

automatable no cvss 5.4 cvss_vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N cwe CWE-22 exploitation none product Langflow OSS severity MEDIUM status Analyzed technical_impact partial vendor IBM

source