Heap-buffer-overflow in pcre2_compile_32

{
  "id": "16797bc78a42d7223546a23ba158019b91388ddcfd2db2ff6156c3933a464ab1",
  "url": "https://osv.dev/vulnerability/OSV-2026-343",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Heap-buffer-overflow in pcre2_compile_32",
    "summary": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=488713937 ``` Crash type: Heap-buffer-overflow WRITE 4 Crash state: pcre2_compile_32 pcre2_fuzzsupport.c ```",
    "evidence": "osv:OSV-2026-343",
    "products": [
      {
        "name": {
          "value": "pcre2",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "pcre2-10.45",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "pcre2-10.45-RC1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "pcre2-10.46",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "pcre2-10.47",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "pcre2-10.48",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "pcre2-10.48-RC1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "pcre2-10.49",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "OSV-2026-343",
      "aliases": [
        "OSV-2026-343"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/PCRE2Project/pcre2",
              "type": "GIT",
              "events": [
                {
                  "introduced": "24f9d8df0b8ddabc217ec4e7856a678e09f52773"
                },
                {
                  "fixed": "e19e76ad8e5bbdf8a22b69e0f408692329e1e516"
                }
              ]
            }
          ],
          "package": {
            "name": "pcre2",
            "purl": "pkg:generic/pcre2",
            "ecosystem": "OSS-Fuzz"
          },
          "versions": [
            "pcre2-10.45",
            "pcre2-10.45-RC1",
            "pcre2-10.46",
            "pcre2-10.47",
            "pcre2-10.48",
            "pcre2-10.48-RC1",
            "pcre2-10.49"
          ],
          "database_specific": {
            "source": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/pcre2/OSV-2026-343.yaml",
            "fixed_range": "a2b146a3245a930aa4c8ea8b33c0d83092daa7c9:e19e76ad8e5bbdf8a22b69e0f408692329e1e516",
            "introduced_range": "fc38d9e784f6d7db070b78d062f1b3de034965b2:ccb259f089a8a54c06ce7b17d9cbac4302652bb1"
          },
          "ecosystem_specific": {
            "severity": "HIGH"
          }
        }
      ],
      "modified": "2026-10-20T17:25:19.376227252Z",
      "provider": "osv",
      "references": [
        "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=488713937"
      ]
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 389860,
  "published_at": "2026-03-03T00:19:45.153716+00:00"
}