{"id":"CVE-2026-50627","aliases":["GHSA-9mrv-8pvf-hf4m"],"url":"https://o3.security/vulnerability/CVE-2026-50627","summary":"Apache CXF: OAuth2: Missing JWT Audience and Issuer Validation in Access Token Validator","details":"The JwtAccessTokenValidator class in Apache CXF fails to validate the 'aud' (Audience) claims of incoming JWT access tokens. This allows a JWT issued for one Resource Server to be successfully replayed against a completely different Resource Server, leading to Token Confusion/Routing attacks. Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fixes this issue.","published":"2026-06-12T08:55:41.657Z","modified":"2026-08-20T18:48:07.967530754Z","cvss":{"score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.cxf:cxf-rt-rs-security-oauth2","fixedVersion":"4.2.2"},{"ecosystem":"Maven","name":"org.apache.cxf:cxf-rt-rs-security-oauth2","fixedVersion":"4.1.7"}],"fix":null,"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/06/11/4"},{"type":"WEB","url":"https://repo.maven.apache.org/maven2"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50627.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:37390"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-50627"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50627.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/0jfzz9q992957b99tw7hodcqjfyxwb1m"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50627"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2488298"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-20T18:48:07.967530754Z"}}