CVE-2026-50627
Apache CXF: OAuth2: Missing JWT Audience and Issuer Validation in Access Token Validator
CVSS Score
9.1
EPSS Score
0.0%
EPSS Percentile
0th
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, which fixes this issue.
| CWE | CWE-289 |
| Vendor | apache software foundation |
| Product | apache cxf |
| Published | Jun 12, 2026 |
| Last Updated | Jul 15, 2026 |
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Affected Versions
Apache Software Foundation / Apache CXF
4.2.0 < 4.2.2 0 < 4.1.7
References
lists.apache.org: https://lists.apache.org/thread/0jfzz9q992957b99tw7hodcqjfyxwb1m openwall.com: http://www.openwall.com/lists/oss-security/2026/06/11/4 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-50627 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2488298 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50627.json access.redhat.com: https://access.redhat.com/errata/RHSA-2026:37390
Credits
Guanping Zhang reported this vulnerability.