UTMStack before 11.2.16 contains an account enumeration vulnerability that allows unauthenticated attackers to determine registered email addresses by observing differing HTTP responses from the POST /api/account/reset-password/init endpoint. Attackers can submit arbitrary email addresses and distinguish registered accounts, which return 200 OK, from unregistered accounts, which trigger a 500 Internal Server Error with backend error details, enabling targeted phishing or credential attacks.

cve CVE-2026-82043 2 sources, 2 claims · Watch

NVD writes:
UTMStack before 11.2.16 contains an account enumeration vulnerability that allows unauthenticated attackers to determine registered email addresses by observing differing HTTP responses from the POST /api/account/reset-password/init endpoint. Attackers can submit arbitrary email addresses and distinguish registered accounts, which return 200 OK, from unregistered accounts, which trigger a 500 Internal Server Error with backend error details, enabling targeted phishing or credential attacks. the claim

What it is to other things

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

affectsutmstack/utmstack
NVD says “UTMStack · UTMStack”
made_byutmstack
NVD says “UTMStack”

What each source says

PropertySourceSaidMeans here
Cvss
cvss
GitHub advisories5.3
receipt
Source
GitHub advisories
Its words
5.3
Read by
field:cvss.score
Said since
2026-10-03 00:02 UTC
Original
open at the source
What the source handed over
{
  "comments": 0,
  "credits": [],
  "cve_id": "CVE-2026-82043",
  "cvss": {
    "score": 5.3,
    "vector_string": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
  },
  "cvss_severities": {
    "cvss_v3": {
      "score": 5.3,
      "vector_string": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
    },
    "cvss_v4": {
      "score": 6.9,
      "vector_string": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
    }
  },
  "cwes": [
    {
      "cwe_id": "CWE-204",
      "name": "Observable Response Discrepancy"
    }
  ],
  "description": "UTMStack before 11.2.16 contains an account enumeration vulnerability that allows unauthenticated attackers to determine registered email addresses by observing differing HTTP responses from the POST /api/account/reset-password/init endpoint. Attackers can submit arbitrary email addresses and distinguish registered accounts, which return 200 OK, from unregistered accounts, which trigger a 500 Internal Server Error with backend error details, enabling targeted phishing or credential attacks.",
  "ghsa_id": "GHSA-62x9-x97p-5mj3",
  "github_reviewed_at": null,
  "html_url": "https://github.com/advisories/GHSA-62x9-x97p-5mj3",
  "identifiers": [
    {
      "type": "GHSA",
      "value": "GHSA-62x9-x97p-5mj3"
    },
    {
      "type": "CVE",
      "value": "CVE-2026-82043"
    }
  ],
  "nvd_published_at": "2026-10-02T21:16:56Z",
  "published_at": "2026-10-02T21:32:07Z",
  "references": [
    "https://nvd.nist.gov/vuln/detail/CVE-2026-82043",
    "https://github.com/utmstack/UTMStack/commit/4e7a727c3b8d8e2ad020d3b4f982a6d085dbecdd",
    "https://github.com/UTMStack/UTMStack/releases/tag/v11.2.16",
    "https://www.vulncheck.com/advisories/utmstack-account-enumeration-via-password-reset-endpoint",
    "https://github.com/advisories/GHSA-62x9-x97p-5mj3"
  ],
  "repository_advisory_url": null,
  "severity": "medium",
  "source_code_location": "",
  "summary": "UTMStack before 11.2.16 contains an account enumeration vulnerability that allows unauthenticated...",
  "type": "unreviewed",
  "updated_at": "2026-10-02T21:32:19Z",
  "url": "https://api.github.com/advisories/GHSA-62x9-x97p-5mj3",
  "vulnerabilities": [],
  "withdrawn_at": null
}
—
Cvss
cvss
NVD5.3
receipt
Source
NVD
Its words
5.3
Read by
field:cve.metrics.cvssMetricV31[].cvssData.baseScore
Said since
2026-10-03 00:06 UTC
Last answered
2026-10-04 06:13 UTC
Original
open at the source
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "packageURL": "pkg:github/utmstack/UTMStack",
            "product": "UTMStack",
            "repo": "https://github.com/utmstack/UTMStack",
            "vendor": "UTMStack",
            "versions": [
              {
                "lessThan": "11.2.16",
                "status": "affected",
                "version": "0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "disclosure@vulncheck.com"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "UTMStack before 11.2.16 contains an account enumeration vulnerability that allows unauthenticated attackers to determine registered email addresses by observing differing HTTP responses from the POST /api/account/reset-password/init endpoint. Attackers can submit arbitrary email addresses and distinguish registered accounts, which return 200 OK, from unregistered accounts, which trigger a 500 Internal Server Error with backend error details, enabling targeted phishing or credential attacks."
      }
    ],
    "id": "CVE-2026-82043",
    "lastModified": "2026-10-02T21:16:56.790",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 1.4,
          "source": "disclosure@vulncheck.com",
          "type": "Primary"
        }
      ],
      "cvssMetricV40": [
        {
          "cvssData": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "availabilityRequirement": "NOT_DEFINED",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "confidentialityRequirement": "NOT_DEFINED",
            "exploitMaturity": "NOT_DEFINED",
            "integrityRequirement": "NOT_DEFINED",
            "modifiedAttackComplexity": "NOT_DEFINED",
            "modifiedAttackRequirements": "NOT_DEFINED",
            "modifiedAttackVector": "NOT_DEFINED",
            "modifiedPrivilegesRequired": "NOT_DEFINED",
            "modifiedSubAvailabilityImpact": "NOT_DEFINED",
            "modifiedSubConfidentialityImpact": "NOT_DEFINED",
            "modifiedSubIntegrityImpact": "NOT_DEFINED",
            "modifiedUserInteraction": "NOT_DEFINED",
            "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
            "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
            "modifiedVulnIntegrityImpact": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "source": "disclosure@vulncheck.com",
          "type": "Secondary"
        }
      ]
    },
    "published": "2026-10-02T21:16:56.790",
    "references": [
      {
        "source": "disclosure@vulncheck.com",
        "url": "https://github.com/UTMStack/UTMStack/releases/tag/v11.2.16"
      },
      {
        "source": "disclosure@vulncheck.com",
        "url": "https://github.com/utmstack/UTMStack/commit/4e7a727c3b8d8e2ad020d3b4f982a6d085dbecdd"
      },
      {
        "source": "disclosure@vulncheck.com",
        "url": "https://www.vulncheck.com/advisories/utmstack-account-enumeration-via-password-reset-endpoint"
      }
    ],
    "sourceIdentifier": "disclosure@vulncheck.com",
    "vulnStatus": "Received",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-204"
          }
        ],
        "source": "disclosure@vulncheck.com",
        "type": "Primary"
      }
    ]
  }
}
—
Cwe
cwe
GitHub advisoriesCWE-204
receipt
Source
GitHub advisories
Its words
CWE-204
Read by
field:cwes[].cwe_id
Said since
2026-10-03 00:02 UTC
Original
open at the source
What the source handed over
{
  "comments": 0,
  "credits": [],
  "cve_id": "CVE-2026-82043",
  "cvss": {
    "score": 5.3,
    "vector_string": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
  },
  "cvss_severities": {
    "cvss_v3": {
      "score": 5.3,
      "vector_string": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
    },
    "cvss_v4": {
      "score": 6.9,
      "vector_string": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
    }
  },
  "cwes": [
    {
      "cwe_id": "CWE-204",
      "name": "Observable Response Discrepancy"
    }
  ],
  "description": "UTMStack before 11.2.16 contains an account enumeration vulnerability that allows unauthenticated attackers to determine registered email addresses by observing differing HTTP responses from the POST /api/account/reset-password/init endpoint. Attackers can submit arbitrary email addresses and distinguish registered accounts, which return 200 OK, from unregistered accounts, which trigger a 500 Internal Server Error with backend error details, enabling targeted phishing or credential attacks.",
  "ghsa_id": "GHSA-62x9-x97p-5mj3",
  "github_reviewed_at": null,
  "html_url": "https://github.com/advisories/GHSA-62x9-x97p-5mj3",
  "identifiers": [
    {
      "type": "GHSA",
      "value": "GHSA-62x9-x97p-5mj3"
    },
    {
      "type": "CVE",
      "value": "CVE-2026-82043"
    }
  ],
  "nvd_published_at": "2026-10-02T21:16:56Z",
  "published_at": "2026-10-02T21:32:07Z",
  "references": [
    "https://nvd.nist.gov/vuln/detail/CVE-2026-82043",
    "https://github.com/utmstack/UTMStack/commit/4e7a727c3b8d8e2ad020d3b4f982a6d085dbecdd",
    "https://github.com/UTMStack/UTMStack/releases/tag/v11.2.16",
    "https://www.vulncheck.com/advisories/utmstack-account-enumeration-via-password-reset-endpoint",
    "https://github.com/advisories/GHSA-62x9-x97p-5mj3"
  ],
  "repository_advisory_url": null,
  "severity": "medium",
  "source_code_location": "",
  "summary": "UTMStack before 11.2.16 contains an account enumeration vulnerability that allows unauthenticated...",
  "type": "unreviewed",
  "updated_at": "2026-10-02T21:32:19Z",
  "url": "https://api.github.com/advisories/GHSA-62x9-x97p-5mj3",
  "vulnerabilities": [],
  "withdrawn_at": null
}
—
Product
product
NVDUTMStack
receipt
Source
NVD
Its words
UTMStack
Read by
field:cve.affected[].affectedData[].product
Said since
2026-10-03 00:06 UTC
Last answered
2026-10-04 06:13 UTC
Original
open at the source
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "packageURL": "pkg:github/utmstack/UTMStack",
            "product": "UTMStack",
            "repo": "https://github.com/utmstack/UTMStack",
            "vendor": "UTMStack",
            "versions": [
              {
                "lessThan": "11.2.16",
                "status": "affected",
                "version": "0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "disclosure@vulncheck.com"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "UTMStack before 11.2.16 contains an account enumeration vulnerability that allows unauthenticated attackers to determine registered email addresses by observing differing HTTP responses from the POST /api/account/reset-password/init endpoint. Attackers can submit arbitrary email addresses and distinguish registered accounts, which return 200 OK, from unregistered accounts, which trigger a 500 Internal Server Error with backend error details, enabling targeted phishing or credential attacks."
      }
    ],
    "id": "CVE-2026-82043",
    "lastModified": "2026-10-02T21:16:56.790",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 1.4,
          "source": "disclosure@vulncheck.com",
          "type": "Primary"
        }
      ],
      "cvssMetricV40": [
        {
          "cvssData": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "availabilityRequirement": "NOT_DEFINED",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "confidentialityRequirement": "NOT_DEFINED",
            "exploitMaturity": "NOT_DEFINED",
            "integrityRequirement": "NOT_DEFINED",
            "modifiedAttackComplexity": "NOT_DEFINED",
            "modifiedAttackRequirements": "NOT_DEFINED",
            "modifiedAttackVector": "NOT_DEFINED",
            "modifiedPrivilegesRequired": "NOT_DEFINED",
            "modifiedSubAvailabilityImpact": "NOT_DEFINED",
            "modifiedSubConfidentialityImpact": "NOT_DEFINED",
            "modifiedSubIntegrityImpact": "NOT_DEFINED",
            "modifiedUserInteraction": "NOT_DEFINED",
            "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
            "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
            "modifiedVulnIntegrityImpact": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "source": "disclosure@vulncheck.com",
          "type": "Secondary"
        }
      ]
    },
    "published": "2026-10-02T21:16:56.790",
    "references": [
      {
        "source": "disclosure@vulncheck.com",
        "url": "https://github.com/UTMStack/UTMStack/releases/tag/v11.2.16"
      },
      {
        "source": "disclosure@vulncheck.com",
        "url": "https://github.com/utmstack/UTMStack/commit/4e7a727c3b8d8e2ad020d3b4f982a6d085dbecdd"
      },
      {
        "source": "disclosure@vulncheck.com",
        "url": "https://www.vulncheck.com/advisories/utmstack-account-enumeration-via-password-reset-endpoint"
      }
    ],
    "sourceIdentifier": "disclosure@vulncheck.com",
    "vulnStatus": "Received",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-204"
          }
        ],
        "source": "disclosure@vulncheck.com",
        "type": "Primary"
      }
    ]
  }
}
—
Severity
severity
GitHub advisoriesmedium
receipt
Source
GitHub advisories
Its words
medium
Read by
field:severity
Said since
2026-10-03 00:02 UTC
Original
open at the source
What the source handed over
{
  "comments": 0,
  "credits": [],
  "cve_id": "CVE-2026-82043",
  "cvss": {
    "score": 5.3,
    "vector_string": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
  },
  "cvss_severities": {
    "cvss_v3": {
      "score": 5.3,
      "vector_string": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
    },
    "cvss_v4": {
      "score": 6.9,
      "vector_string": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
    }
  },
  "cwes": [
    {
      "cwe_id": "CWE-204",
      "name": "Observable Response Discrepancy"
    }
  ],
  "description": "UTMStack before 11.2.16 contains an account enumeration vulnerability that allows unauthenticated attackers to determine registered email addresses by observing differing HTTP responses from the POST /api/account/reset-password/init endpoint. Attackers can submit arbitrary email addresses and distinguish registered accounts, which return 200 OK, from unregistered accounts, which trigger a 500 Internal Server Error with backend error details, enabling targeted phishing or credential attacks.",
  "ghsa_id": "GHSA-62x9-x97p-5mj3",
  "github_reviewed_at": null,
  "html_url": "https://github.com/advisories/GHSA-62x9-x97p-5mj3",
  "identifiers": [
    {
      "type": "GHSA",
      "value": "GHSA-62x9-x97p-5mj3"
    },
    {
      "type": "CVE",
      "value": "CVE-2026-82043"
    }
  ],
  "nvd_published_at": "2026-10-02T21:16:56Z",
  "published_at": "2026-10-02T21:32:07Z",
  "references": [
    "https://nvd.nist.gov/vuln/detail/CVE-2026-82043",
    "https://github.com/utmstack/UTMStack/commit/4e7a727c3b8d8e2ad020d3b4f982a6d085dbecdd",
    "https://github.com/UTMStack/UTMStack/releases/tag/v11.2.16",
    "https://www.vulncheck.com/advisories/utmstack-account-enumeration-via-password-reset-endpoint",
    "https://github.com/advisories/GHSA-62x9-x97p-5mj3"
  ],
  "repository_advisory_url": null,
  "severity": "medium",
  "source_code_location": "",
  "summary": "UTMStack before 11.2.16 contains an account enumeration vulnerability that allows unauthenticated...",
  "type": "unreviewed",
  "updated_at": "2026-10-02T21:32:19Z",
  "url": "https://api.github.com/advisories/GHSA-62x9-x97p-5mj3",
  "vulnerabilities": [],
  "withdrawn_at": null
}
—
Status
status
NVDReceived
receipt
Source
NVD
Its words
Received
Read by
field:cve.vulnStatus
Said since
2026-10-03 00:06 UTC
Last answered
2026-10-04 06:13 UTC
Original
open at the source
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "packageURL": "pkg:github/utmstack/UTMStack",
            "product": "UTMStack",
            "repo": "https://github.com/utmstack/UTMStack",
            "vendor": "UTMStack",
            "versions": [
              {
                "lessThan": "11.2.16",
                "status": "affected",
                "version": "0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "disclosure@vulncheck.com"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "UTMStack before 11.2.16 contains an account enumeration vulnerability that allows unauthenticated attackers to determine registered email addresses by observing differing HTTP responses from the POST /api/account/reset-password/init endpoint. Attackers can submit arbitrary email addresses and distinguish registered accounts, which return 200 OK, from unregistered accounts, which trigger a 500 Internal Server Error with backend error details, enabling targeted phishing or credential attacks."
      }
    ],
    "id": "CVE-2026-82043",
    "lastModified": "2026-10-02T21:16:56.790",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 1.4,
          "source": "disclosure@vulncheck.com",
          "type": "Primary"
        }
      ],
      "cvssMetricV40": [
        {
          "cvssData": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "availabilityRequirement": "NOT_DEFINED",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "confidentialityRequirement": "NOT_DEFINED",
            "exploitMaturity": "NOT_DEFINED",
            "integrityRequirement": "NOT_DEFINED",
            "modifiedAttackComplexity": "NOT_DEFINED",
            "modifiedAttackRequirements": "NOT_DEFINED",
            "modifiedAttackVector": "NOT_DEFINED",
            "modifiedPrivilegesRequired": "NOT_DEFINED",
            "modifiedSubAvailabilityImpact": "NOT_DEFINED",
            "modifiedSubConfidentialityImpact": "NOT_DEFINED",
            "modifiedSubIntegrityImpact": "NOT_DEFINED",
            "modifiedUserInteraction": "NOT_DEFINED",
            "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
            "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
            "modifiedVulnIntegrityImpact": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "source": "disclosure@vulncheck.com",
          "type": "Secondary"
        }
      ]
    },
    "published": "2026-10-02T21:16:56.790",
    "references": [
      {
        "source": "disclosure@vulncheck.com",
        "url": "https://github.com/UTMStack/UTMStack/releases/tag/v11.2.16"
      },
      {
        "source": "disclosure@vulncheck.com",
        "url": "https://github.com/utmstack/UTMStack/commit/4e7a727c3b8d8e2ad020d3b4f982a6d085dbecdd"
      },
      {
        "source": "disclosure@vulncheck.com",
        "url": "https://www.vulncheck.com/advisories/utmstack-account-enumeration-via-password-reset-endpoint"
      }
    ],
    "sourceIdentifier": "disclosure@vulncheck.com",
    "vulnStatus": "Received",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-204"
          }
        ],
        "source": "disclosure@vulncheck.com",
        "type": "Primary"
      }
    ]
  }
}
—
Vendor
vendor
NVDUTMStack
receipt
Source
NVD
Its words
UTMStack
Read by
field:cve.affected[].affectedData[].vendor
Said since
2026-10-03 00:06 UTC
Last answered
2026-10-04 06:13 UTC
Original
open at the source
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "packageURL": "pkg:github/utmstack/UTMStack",
            "product": "UTMStack",
            "repo": "https://github.com/utmstack/UTMStack",
            "vendor": "UTMStack",
            "versions": [
              {
                "lessThan": "11.2.16",
                "status": "affected",
                "version": "0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "disclosure@vulncheck.com"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "UTMStack before 11.2.16 contains an account enumeration vulnerability that allows unauthenticated attackers to determine registered email addresses by observing differing HTTP responses from the POST /api/account/reset-password/init endpoint. Attackers can submit arbitrary email addresses and distinguish registered accounts, which return 200 OK, from unregistered accounts, which trigger a 500 Internal Server Error with backend error details, enabling targeted phishing or credential attacks."
      }
    ],
    "id": "CVE-2026-82043",
    "lastModified": "2026-10-02T21:16:56.790",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 1.4,
          "source": "disclosure@vulncheck.com",
          "type": "Primary"
        }
      ],
      "cvssMetricV40": [
        {
          "cvssData": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "availabilityRequirement": "NOT_DEFINED",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "confidentialityRequirement": "NOT_DEFINED",
            "exploitMaturity": "NOT_DEFINED",
            "integrityRequirement": "NOT_DEFINED",
            "modifiedAttackComplexity": "NOT_DEFINED",
            "modifiedAttackRequirements": "NOT_DEFINED",
            "modifiedAttackVector": "NOT_DEFINED",
            "modifiedPrivilegesRequired": "NOT_DEFINED",
            "modifiedSubAvailabilityImpact": "NOT_DEFINED",
            "modifiedSubConfidentialityImpact": "NOT_DEFINED",
            "modifiedSubIntegrityImpact": "NOT_DEFINED",
            "modifiedUserInteraction": "NOT_DEFINED",
            "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
            "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
            "modifiedVulnIntegrityImpact": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "source": "disclosure@vulncheck.com",
          "type": "Secondary"
        }
      ]
    },
    "published": "2026-10-02T21:16:56.790",
    "references": [
      {
        "source": "disclosure@vulncheck.com",
        "url": "https://github.com/UTMStack/UTMStack/releases/tag/v11.2.16"
      },
      {
        "source": "disclosure@vulncheck.com",
        "url": "https://github.com/utmstack/UTMStack/commit/4e7a727c3b8d8e2ad020d3b4f982a6d085dbecdd"
      },
      {
        "source": "disclosure@vulncheck.com",
        "url": "https://www.vulncheck.com/advisories/utmstack-account-enumeration-via-password-reset-endpoint"
      }
    ],
    "sourceIdentifier": "disclosure@vulncheck.com",
    "vulnStatus": "Received",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-204"
          }
        ],
        "source": "disclosure@vulncheck.com",
        "type": "Primary"
      }
    ]
  }
}
—

vulnerability

UTMStack before 11.2.16 contains an account enumeration vulnerability that allows unauthenticated attackers to determine registered email addresses by observing differing HTTP responses from the POST /api/account/reset-password/init endpoint. Attackers can submit arbitrary email addresses and distinguish registered accounts, which return 200 OK, from unregistered accounts, which trigger a 500 Internal Server Error with backend error details, enabling targeted phishing or credential attacks.
zetlyn/cve-nvd · 2026-10-02
cvss 5.3 product UTMStack status Received vendor UTMStack source
UTMStack before 11.2.16 contains an account enumeration vulnerability that allows unauthenticated...
zetlyn/cve-ghsa · 2026-10-02
cvss 5.3 cwe CWE-204 severity medium source