Apache CXF: OAuth2: Missing JWT Audience and Issuer Validation in Access Token Validator (Apache Software Foundation Apache CXF)
At a glance
- Source
- NVD
- EPSS
- EPSS 4.52 % · percentile 92 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- apache
- NVD status
- Modified
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.
Weaknesses (CWE)
- CWE-289 — Authentication Bypass by Alternate Name
- CWE-303 — Incorrect Implementation of Authentication Algorithm
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
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.1 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H | CISA-ADP |
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | redhat-SADP |
| CVSS 3.1 | CRITICAL 9.1 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.1 | CRITICAL 9.1 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary) |
Advisories
- GHSA-9mrv-8pvf-hf4m — Apache CXF OAuth2 Missing JWT Audience and Issuer Validation in Access Token Validator
European references
- ENISA EUVD · EUVD-2026-36395
- GCVE · GCVE-0-2026-50627
Affected configurations (NVD CPE)
cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*< 4.1.7cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*≥ 4.2.0 < 4.2.2
Affected products
| Product | Versions |
|---|---|
| Apache Software Foundation · Apache CXF | affected 4.2.0 < 4.2.2 ; affected 4.0.0 < 4.1.7 ; affected 0 < 3.6.12 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |