Security advisory

{
  "id": "d98f0f545c37230a673cf84c6712165950b14df776414190ab9eddec1d3fb251",
  "url": "https://osv.dev/vulnerability/CVE-2026-103111",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-103111",
    "summary": "PCRE2 before 10.49, when there is an attacker-controlled regular expression and certain JIT API usage, allows an out-of-bounds write with arbitrary data.",
    "evidence": "osv:CVE-2026-103111",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-103111",
      "aliases": [
        "CVE-2026-103111",
        "GHSA-r9hj-j2rw-4q3m"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/pcre2project/pcre2",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6f9d7c1373262c541324a16a358785b33ef116cf"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "10.49"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "2"
                      },
                      {
                        "fixed": "10.49"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "pcre2-10.39",
            "pcre2-10.40",
            "pcre2-10.44",
            "pcre2-10.43",
            "pcre2-10.42",
            "pcre2-10.43-RC1",
            "pcre2-10.41",
            "pcre2-10.38",
            "pcre2-10.38-RC1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-103111.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:38.757850714Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2026/10/msg00008.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103111.json",
        "https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-r9hj-j2rw-4q3m",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-103111"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-787"
        ],
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103111.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-103111",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 506230,
  "published_at": "2026-09-30T04:13:59.115+00:00"
}