{"id":"CVE-2026-50634","aliases":["GHSA-33j8-j763-4fv5"],"url":"https://o3.security/vulnerability/CVE-2026-50634","summary":"Apache CXF: WS JSON request filter trusts metadata from an unvalidated first signature entry","details":"A vulnerability in Apache CXF's JwsJsonContainerRequestFilter can be exploited to cause CXF to process metadata that was not authenticated by the accepted signature. This can bypass the application's assumption\n\nthat accepted `Content-Type` or protected HTTP-header metadata came from a verified signature entry, and may steer downstream JAX-RS entity parsing or signed-header consistency checks. Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fix this issue.","published":"2026-06-12T09:05:53.768Z","modified":"2026-08-20T18:48:08.641903790Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.cxf:cxf-rt-rs-security-jose-jaxrs","fixedVersion":"4.2.2"},{"ecosystem":"Maven","name":"org.apache.cxf:cxf-rt-rs-security-jose-jaxrs","fixedVersion":"4.1.7"}],"fix":null,"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/06/11/11"},{"type":"WEB","url":"https://repo.maven.apache.org/maven2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50634.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/9nfwh9d3m4kznxrk1mz98hl0jml18k0p"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50634"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-20T18:48:08.641903790Z"}}