Security fix in MessagePack-CSharp v2.5.305

{
  "id": "57c91225cb2722b501903cd00bc172827287396480d209a29762955bd99c6feb",
  "url": "https://github.com/MessagePack-CSharp/MessagePack-CSharp/releases/tag/v2.5.305",
  "method": "llm",
  "payload": {
    "kind": "patch",
    "title": "Security fix in MessagePack-CSharp v2.5.305",
    "summary": "MessagePack-CSharp v2.5.305 fixes catastrophic backtracking caused by unescaped dot metacharacters in AssemblyNameVersionSelectorRegex.",
    "evidence": "Security fix Fixes Unescaped dot metacharacters in AssemblyNameVersionSelectorRegex cause catastrophic backtracking",
    "products": [
      {
        "name": {
          "value": "MessagePack-CSharp",
          "evidence": "Release notes from MessagePack-CSharp"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "v2.5.305",
            "evidence": "v2.5.305"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "github-messagepack-csharp-messagepack-csharp",
  "document_id": 21756,
  "published_at": "2026-09-23T13:35:32+00:00"
}