{"schema_version": "1.6.1", "id": "CVE-2026-64958", "summary": "Denial of service via message header attachments", "details": "An incomplete fix for CVE-2026-50645 means that it is still possible to perform a denial of service attack on Apache CXF by sending a message with many attachment headers. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.", "affected": [{"ranges": [{"type": "SEMVER", "events": [{"introduced": "4.2.0"}, {"fixed": "4.2.3"}]}, {"type": "SEMVER", "events": [{"introduced": "4.0.0"}, {"fixed": "4.1.8"}]}, {"type": "SEMVER", "events": [{"introduced": "0"}, {"fixed": "3.6.12"}]}]}], "references": [{"type": "WEB", "url": "https://lists.apache.org/thread/trsnkxc2f21585zlt819blvchgl6oykb"}]}