apache/cxf · Security
Apache CXF OAuth2 Missing JWT Audience and Issuer Validation in Access Token Validator
- GHSA ID
- GHSA-9mrv-8pvf-hf4m
- CVE ID
- CVE-2026-50627
- Severity
- critical
- Published
- Updated
- CVSS
- 9.1 · CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- CVSS v3
- 9.1 · CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
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, which fixes this issue.
CWEs
- CWE-289 · Authentication Bypass by Alternate Name
- CWE-303 · Incorrect Implementation of Authentication Algorithm
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-50627 ↗
- 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 ↗
- https://github.com/advisories/GHSA-9mrv-8pvf-hf4m ↗