Description
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.
References
- www.cve.org/CVERecord ↗
- nvd.nist.gov/vuln/detail/CVE-2026-50627 ↗
- lists.apache.org/thread/0jfzz9q992957b99tw7hodcqjfyxwb1m ↗
- www.openwall.com/lists/oss-security/2026/06/11/4 ↗
- access.redhat.com/errata/RHSA-2026:37390 ↗
- access.redhat.com/security/cve/CVE-2026-50627 ↗
- bugzilla.redhat.com/show_bug.cgi ↗
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50627.json ↗
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This product uses the NVD API but is not endorsed or certified by the NVD. CVSS scores do not establish exploitation.