CVE-2026-50627
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.
- Score
- CVSS 3.1 9.1 Critical
- Status
- Modified - security@apache.org
- Published
- 2026-06-12
- Last modified
- 2026-10-26
- Weaknesses
- CWE-289, CWE-303
Affected products
- Cxf (Apache)
- Apache Cxf (Apache Software Foundation)
- Apache Camel Spring Boot (Redhat)
- Jboss Enterprise Web Server (Redhat)
- Jboss Fuse (Redhat)
- Jbosseapxp (Redhat)
References
- https://lists.apache.org/thread/0jfzz9q992957b99tw7hodcqjfyxwb1m
- http://www.openwall.com/lists/oss-security/2026/06/11/4
- https://access.redhat.com/security/cve/CVE-2026-50627
- https://bugzilla.redhat.com/show_bug.cgi?id=2488298
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50627.json
- https://access.redhat.com/errata/RHSA-2026:37390
