pcre2: PCRE2: Memory corruption vulnerability in pcre2_jit_match

cve CVE-2026-89161 2 sources, 2 claims · Watch

Red Hat writes:
pcre2: PCRE2: Memory corruption vulnerability in pcre2_jit_match the claim

Severity: HIGH NVD
important Red Hat
CVSS they disagree: 7.8 NVD
7.4 Red Hat
Fixed in: 10.48 NVD
Vendor: PCRE NVD
Product: PCRE2 NVD
CWE: CWE-590 NVD
CWE-1341 Red Hat

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

Why the CVSS differs

Metric	NVD	Red Hat
Attack vector AV	local L	local L
Attack complexity AC	low L	high H
Privileges required PR	low L	none N
User interaction UI	none N	none N
Scope S	unchanged U	unchanged U
Confidentiality C	high H	high H
Integrity I	high H	high H
Availability A	high H	high H

Each source scores the same vulnerability from what it judges the attack to need. The rows marked are where they judge it differently.

Timeline

2026-09-11	first spoke of it: In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context. An incorrect free operation can occur.	NVD
2026-09-11	first spoke of it: pcre2: PCRE2: Memory corruption vulnerability in pcre2_jit_match	Red Hat

What it is to other things

affects	pcre/pcre2 NVD
made_by	pcre NVD

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": [
          {
            "defaultStatus": "unaffected",
            "product": "PCRE2",
            "vendor": "PCRE",
            "versions": [
              {
                "lessThan": "10.48",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "source": "cve@mitre.org"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:pcre:pcre2:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "0E8A01CE-84F5-403A-B2C9-5968788808FF",
                "versionEndExcluding": "10.48",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:a:pcre:pcre2:10.48:rc1:*:*:*:*:*:*",
                "matchCriteriaId": "F9DDE9D5-4804-4EC0-A0F6-47E6117D0821",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context. An incorrect free operation can occur."
      }
    ],
    "id": "CVE-2026-89161",
    "lastModified": "2026-09-16T19:10:47.780",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.4,
          "impactScore": 5.9,
          "source": "cve@mitre.org",
          "type": "Secondary"
        },
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 5.9,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
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            "options": [
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              },
              {
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              },
              {
                "technicalImpact": "total"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-11T19:59:09.931879Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-09-11T04:18:04.470",
    "references": [
      {
        "source": "cve@mitre.org",
        "tags": [
          "Patch"
        ],
        "url": "https://github.com/PCRE2Project/pcre2/pull/937"
      },
      {
        "source": "cve@mitre.org",
        "tags": [
          "Release Notes"
        ],
        "url": "https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48"
      }
    ],
    "sourceIdentifier": "cve@mitre.org",
    "vulnStatus": "Undergoing Analysis",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-590"
          }
        ],
        "source": "cve@mitre.org",
        "type": "Secondary"
      }
    ]
  }
}

—

CVSS

cvss

conflict

NVD

7.8

receipt

Source: NVD
Its words: 7.8
Read by: field:cve.metrics.cvssMetricV31[type=Primary].cvssData.baseScore || field:cve.metrics.cvssMetricV31[].cvssData.baseScore
Said since: 2026-10-06 11:32 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-10-06 11:32 UTC	7.8
2026-09-29 09:45 UTC	7.4

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "PCRE2",
            "vendor": "PCRE",
            "versions": [
              {
                "lessThan": "10.48",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "source": "cve@mitre.org"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:pcre:pcre2:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "0E8A01CE-84F5-403A-B2C9-5968788808FF",
                "versionEndExcluding": "10.48",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:a:pcre:pcre2:10.48:rc1:*:*:*:*:*:*",
                "matchCriteriaId": "F9DDE9D5-4804-4EC0-A0F6-47E6117D0821",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context. An incorrect free operation can occur."
      }
    ],
    "id": "CVE-2026-89161",
    "lastModified": "2026-09-16T19:10:47.780",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.4,
          "impactScore": 5.9,
          "source": "cve@mitre.org",
          "type": "Secondary"
        },
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 5.9,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-89161",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "total"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-11T19:59:09.931879Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-09-11T04:18:04.470",
    "references": [
      {
        "source": "cve@mitre.org",
        "tags": [
          "Patch"
        ],
        "url": "https://github.com/PCRE2Project/pcre2/pull/937"
      },
      {
        "source": "cve@mitre.org",
        "tags": [
          "Release Notes"
        ],
        "url": "https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48"
      }
    ],
    "sourceIdentifier": "cve@mitre.org",
    "vulnStatus": "Undergoing Analysis",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-590"
          }
        ],
        "source": "cve@mitre.org",
        "type": "Secondary"
      }
    ]
  }
}

—

CVSS

cvss

conflict

Red Hat

7.4

receipt

Source: Red Hat
Its words: 7.4
Read by: field:cvss3_score
Said since: 2026-09-29 09:44 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

What the source handed over

{
  "CVE": "CVE-2026-89161",
  "CWE": "CWE-1341",
  "advisories": [
    "RHSA-2026:67534"
  ],
  "affected_packages": [
    "pcre2-main-10.48-0.1.hum1"
  ],
  "bugzilla": "2531747",
  "bugzilla_description": "pcre2: PCRE2: Memory corruption vulnerability in pcre2_jit_match",
  "cvss3_score": "7.4",
  "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-09-11T04:11:51Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-89161.json",
  "severity": "important"
}

—

CVSS vector

cvss_vector

not compared

NVD

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

receipt

Source: NVD
Its words: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "PCRE2",
            "vendor": "PCRE",
            "versions": [
              {
                "lessThan": "10.48",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "source": "cve@mitre.org"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:pcre:pcre2:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "0E8A01CE-84F5-403A-B2C9-5968788808FF",
                "versionEndExcluding": "10.48",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:a:pcre:pcre2:10.48:rc1:*:*:*:*:*:*",
                "matchCriteriaId": "F9DDE9D5-4804-4EC0-A0F6-47E6117D0821",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context. An incorrect free operation can occur."
      }
    ],
    "id": "CVE-2026-89161",
    "lastModified": "2026-09-16T19:10:47.780",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
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          "impactScore": 5.9,
          "source": "cve@mitre.org",
          "type": "Secondary"
        },
        {
          "cvssData": {
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            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
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          "source": "nvd@nist.gov",
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        }
      ],
      "ssvcV203": [
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          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
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            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "total"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-11T19:59:09.931879Z",
            "version": "2.0.3"
          }
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    },
    "published": "2026-09-11T04:18:04.470",
    "references": [
      {
        "source": "cve@mitre.org",
        "tags": [
          "Patch"
        ],
        "url": "https://github.com/PCRE2Project/pcre2/pull/937"
      },
      {
        "source": "cve@mitre.org",
        "tags": [
          "Release Notes"
        ],
        "url": "https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48"
      }
    ],
    "sourceIdentifier": "cve@mitre.org",
    "vulnStatus": "Undergoing Analysis",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-590"
          }
        ],
        "source": "cve@mitre.org",
        "type": "Secondary"
      }
    ]
  }
}

—

CVSS vector

cvss_vector

not compared

Red Hat

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

receipt

Source: Red Hat
Its words: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Read by: field:cvss3_scoring_vector
Said since: 2026-10-06 13:01 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

2026-10-06 13:01 UTC	CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
2026-09-29 09:44 UTC	—

What the source handed over

{
  "CVE": "CVE-2026-89161",
  "CWE": "CWE-1341",
  "advisories": [
    "RHSA-2026:67534"
  ],
  "affected_packages": [
    "pcre2-main-10.48-0.1.hum1"
  ],
  "bugzilla": "2531747",
  "bugzilla_description": "pcre2: PCRE2: Memory corruption vulnerability in pcre2_jit_match",
  "cvss3_score": "7.4",
  "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-09-11T04:11:51Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-89161.json",
  "severity": "important"
}

—

CWE

cwe

different words

NVD

CWE-590

receipt

Source: NVD
Its words: CWE-590
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-590
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "PCRE2",
            "vendor": "PCRE",
            "versions": [
              {
                "lessThan": "10.48",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "source": "cve@mitre.org"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:pcre:pcre2:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "0E8A01CE-84F5-403A-B2C9-5968788808FF",
                "versionEndExcluding": "10.48",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:a:pcre:pcre2:10.48:rc1:*:*:*:*:*:*",
                "matchCriteriaId": "F9DDE9D5-4804-4EC0-A0F6-47E6117D0821",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context. An incorrect free operation can occur."
      }
    ],
    "id": "CVE-2026-89161",
    "lastModified": "2026-09-16T19:10:47.780",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.4,
          "impactScore": 5.9,
          "source": "cve@mitre.org",
          "type": "Secondary"
        },
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
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            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 5.9,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-89161",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "total"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-11T19:59:09.931879Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-09-11T04:18:04.470",
    "references": [
      {
        "source": "cve@mitre.org",
        "tags": [
          "Patch"
        ],
        "url": "https://github.com/PCRE2Project/pcre2/pull/937"
      },
      {
        "source": "cve@mitre.org",
        "tags": [
          "Release Notes"
        ],
        "url": "https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48"
      }
    ],
    "sourceIdentifier": "cve@mitre.org",
    "vulnStatus": "Undergoing Analysis",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-590"
          }
        ],
        "source": "cve@mitre.org",
        "type": "Secondary"
      }
    ]
  }
}

—

CWE

cwe

different words

Red Hat

CWE-1341

receipt

Source: Red Hat
Its words: CWE-1341
Read by: field:CWE
Said since: 2026-09-29 09:44 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

What the source handed over

{
  "CVE": "CVE-2026-89161",
  "CWE": "CWE-1341",
  "advisories": [
    "RHSA-2026:67534"
  ],
  "affected_packages": [
    "pcre2-main-10.48-0.1.hum1"
  ],
  "bugzilla": "2531747",
  "bugzilla_description": "pcre2: PCRE2: Memory corruption vulnerability in pcre2_jit_match",
  "cvss3_score": "7.4",
  "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-09-11T04:11:51Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-89161.json",
  "severity": "important"
}

—

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": [
          {
            "defaultStatus": "unaffected",
            "product": "PCRE2",
            "vendor": "PCRE",
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              {
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                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "source": "cve@mitre.org"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
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                "versionEndExcluding": "10.48",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:a:pcre:pcre2:10.48:rc1:*:*:*:*:*:*",
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                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context. An incorrect free operation can occur."
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    ],
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    "lastModified": "2026-09-16T19:10:47.780",
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      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "HIGH",
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            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
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            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.4,
          "impactScore": 5.9,
          "source": "cve@mitre.org",
          "type": "Secondary"
        },
        {
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            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 5.9,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-89161",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "total"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-11T19:59:09.931879Z",
            "version": "2.0.3"
          }
        }
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    },
    "published": "2026-09-11T04:18:04.470",
    "references": [
      {
        "source": "cve@mitre.org",
        "tags": [
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        "url": "https://github.com/PCRE2Project/pcre2/pull/937"
      },
      {
        "source": "cve@mitre.org",
        "tags": [
          "Release Notes"
        ],
        "url": "https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48"
      }
    ],
    "sourceIdentifier": "cve@mitre.org",
    "vulnStatus": "Undergoing Analysis",
    "weaknesses": [
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          }
        ],
        "source": "cve@mitre.org",
        "type": "Secondary"
      }
    ]
  }
}

—

Fixed in

fixed_in

NVD

10.48

receipt

Source: NVD
Its words: 10.48
Read by: field:cve.affected[].affectedData[].versions[status=affected].lessThan
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	10.48
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "PCRE2",
            "vendor": "PCRE",
            "versions": [
              {
                "lessThan": "10.48",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "source": "cve@mitre.org"
      }
    ],
    "configurations": [
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          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:pcre:pcre2:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "0E8A01CE-84F5-403A-B2C9-5968788808FF",
                "versionEndExcluding": "10.48",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:a:pcre:pcre2:10.48:rc1:*:*:*:*:*:*",
                "matchCriteriaId": "F9DDE9D5-4804-4EC0-A0F6-47E6117D0821",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
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        "lang": "en",
        "value": "In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context. An incorrect free operation can occur."
      }
    ],
    "id": "CVE-2026-89161",
    "lastModified": "2026-09-16T19:10:47.780",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.4,
          "impactScore": 5.9,
          "source": "cve@mitre.org",
          "type": "Secondary"
        },
        {
          "cvssData": {
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            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
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            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
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          "impactScore": 5.9,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
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            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "total"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-11T19:59:09.931879Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-09-11T04:18:04.470",
    "references": [
      {
        "source": "cve@mitre.org",
        "tags": [
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        ],
        "url": "https://github.com/PCRE2Project/pcre2/pull/937"
      },
      {
        "source": "cve@mitre.org",
        "tags": [
          "Release Notes"
        ],
        "url": "https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48"
      }
    ],
    "sourceIdentifier": "cve@mitre.org",
    "vulnStatus": "Undergoing Analysis",
    "weaknesses": [
      {
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          {
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            "value": "CWE-590"
          }
        ],
        "source": "cve@mitre.org",
        "type": "Secondary"
      }
    ]
  }
}

—

Packages

packages

Red Hat

pcre2-main-10.48-0.1.hum1

receipt

Source: Red Hat
Its words: pcre2-main-10.48-0.1.hum1
Read by: field:affected_packages[]
Said since: 2026-09-29 09:44 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

What the source handed over

{
  "CVE": "CVE-2026-89161",
  "CWE": "CWE-1341",
  "advisories": [
    "RHSA-2026:67534"
  ],
  "affected_packages": [
    "pcre2-main-10.48-0.1.hum1"
  ],
  "bugzilla": "2531747",
  "bugzilla_description": "pcre2: PCRE2: Memory corruption vulnerability in pcre2_jit_match",
  "cvss3_score": "7.4",
  "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-09-11T04:11:51Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-89161.json",
  "severity": "important"
}

—

Product

product

NVD

PCRE2

receipt

Source: NVD
Its words: PCRE2
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	PCRE2
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "PCRE2",
            "vendor": "PCRE",
            "versions": [
              {
                "lessThan": "10.48",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "source": "cve@mitre.org"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:pcre:pcre2:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "0E8A01CE-84F5-403A-B2C9-5968788808FF",
                "versionEndExcluding": "10.48",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:a:pcre:pcre2:10.48:rc1:*:*:*:*:*:*",
                "matchCriteriaId": "F9DDE9D5-4804-4EC0-A0F6-47E6117D0821",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context. An incorrect free operation can occur."
      }
    ],
    "id": "CVE-2026-89161",
    "lastModified": "2026-09-16T19:10:47.780",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.4,
          "impactScore": 5.9,
          "source": "cve@mitre.org",
          "type": "Secondary"
        },
        {
          "cvssData": {
            "attackComplexity": "LOW",
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          },
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          "source": "nvd@nist.gov",
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      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
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            "options": [
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              {
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              }
            ],
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            "timestamp": "2026-09-11T19:59:09.931879Z",
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    "published": "2026-09-11T04:18:04.470",
    "references": [
      {
        "source": "cve@mitre.org",
        "tags": [
          "Patch"
        ],
        "url": "https://github.com/PCRE2Project/pcre2/pull/937"
      },
      {
        "source": "cve@mitre.org",
        "tags": [
          "Release Notes"
        ],
        "url": "https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48"
      }
    ],
    "sourceIdentifier": "cve@mitre.org",
    "vulnStatus": "Undergoing Analysis",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-590"
          }
        ],
        "source": "cve@mitre.org",
        "type": "Secondary"
      }
    ]
  }
}

—

Severity

severity

NVD

HIGH

From 7.0 to 8.9.

receipt

Source: NVD
Its words: HIGH
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	HIGH
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "PCRE2",
            "vendor": "PCRE",
            "versions": [
              {
                "lessThan": "10.48",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "source": "cve@mitre.org"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:pcre:pcre2:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "0E8A01CE-84F5-403A-B2C9-5968788808FF",
                "versionEndExcluding": "10.48",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:a:pcre:pcre2:10.48:rc1:*:*:*:*:*:*",
                "matchCriteriaId": "F9DDE9D5-4804-4EC0-A0F6-47E6117D0821",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context. An incorrect free operation can occur."
      }
    ],
    "id": "CVE-2026-89161",
    "lastModified": "2026-09-16T19:10:47.780",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "HIGH",
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            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
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          "impactScore": 5.9,
          "source": "cve@mitre.org",
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        },
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            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
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      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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            "options": [
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                "technicalImpact": "total"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-09-11T19:59:09.931879Z",
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          }
        }
      ]
    },
    "published": "2026-09-11T04:18:04.470",
    "references": [
      {
        "source": "cve@mitre.org",
        "tags": [
          "Patch"
        ],
        "url": "https://github.com/PCRE2Project/pcre2/pull/937"
      },
      {
        "source": "cve@mitre.org",
        "tags": [
          "Release Notes"
        ],
        "url": "https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48"
      }
    ],
    "sourceIdentifier": "cve@mitre.org",
    "vulnStatus": "Undergoing Analysis",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-590"
          }
        ],
        "source": "cve@mitre.org",
        "type": "Secondary"
      }
    ]
  }
}

high

Severity

severity

Red Hat

important

A flaw that can easily compromise confidentiality, integrity or availability.

receipt

Source: Red Hat
Its words: important
Read by: field:severity
Said since: 2026-09-29 09:44 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

What the source handed over

{
  "CVE": "CVE-2026-89161",
  "CWE": "CWE-1341",
  "advisories": [
    "RHSA-2026:67534"
  ],
  "affected_packages": [
    "pcre2-main-10.48-0.1.hum1"
  ],
  "bugzilla": "2531747",
  "bugzilla_description": "pcre2: PCRE2: Memory corruption vulnerability in pcre2_jit_match",
  "cvss3_score": "7.4",
  "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-09-11T04:11:51Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-89161.json",
  "severity": "important"
}

high

Status

status

NVD

Undergoing Analysis

receipt

Source: NVD
Its words: Undergoing Analysis
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

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}

—

Technical impact

technical_impact

NVD

total

The attacker gains full control of the component, or all of its information.

receipt

Source: NVD
Its words: total
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	total
2026-09-29 09:45 UTC	—

What the source handed over

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      {
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                "vulnerable": true
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              {
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            ],
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    ],
    "sourceIdentifier": "cve@mitre.org",
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        "source": "cve@mitre.org",
        "type": "Secondary"
      }
    ]
  }
}

—

Vendor

vendor

NVD

PCRE

receipt

Source: NVD
Its words: PCRE
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	PCRE
2026-09-29 09:45 UTC	—

What the source handed over

{
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      {
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            "vendor": "PCRE",
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    ],
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                "vulnerable": true
              },
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      }
    ]
  }
}

—

Every claim, by kind

vulnerability

pcre2: PCRE2: Memory corruption vulnerability in pcre2_jit_match zetlyn/cve-redhat · 2026-09-11	cvss 7.4 cvss_vector CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H cwe CWE-1341 packages pcre2-main-10.48-0.1.hum1 severity important	source
In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context. An incorrect free operation can occur. zetlyn/cve-nvd · 2026-09-11	automatable no cvss 7.8 cvss_vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H cwe CWE-590 exploitation none fixed_in 10.48 product PCRE2 severity HIGH status Undergoing Analysis technical_impact total vendor PCRE	source