{"id":"CVE-2026-50627","title":"The JwtAccessTokenValidator class in Apache CXF fails to validate the 'aud' (Audience) claims of incoming JWT access tokens","summary":"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 Reso…","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","cwe":["CWE-289","CWE-303"],"vendor":"apache","product":"cxf","affected":["cxf < 4.1.7","cxf >= 4.2.0, < 4.2.2"],"patched":["cxf 4.2.2"],"published":"2026-06-12","updated":"2026-08-07","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-50627","references":[{"url":"https://lists.apache.org/thread/0jfzz9q992957b99tw7hodcqjfyxwb1m","label":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/06/11/4","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2026:37390","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/security/cve/CVE-2026-50627","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2488298","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50627.json","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}],"tags":["nvd"],"epss":0.00776,"epssPercentile":0.53837,"ingestedAt":"2026-08-07T14:14:17.240Z","slug":"CVE-2026-50627","body":"## Overview\n\nThe 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.\n\n## Affected\n\n- `cxf < 4.1.7`\n- `cxf >= 4.2.0, < 4.2.2`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `cxf 4.2.2`","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}