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CVE

CVE-2026-50627

Apache CXF: OAuth2: Missing JWT Audience and Issuer Validation in Access Token Validator
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CVE

CVE-2026-50627

Apache CXF: OAuth2: Missing JWT Audience and Issuer Validation in Access Token Validator

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

http://www.openwall.com/lists/oss-security/2026/06/11/4, https://repo.maven.apache.org/maven2, https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50627.json, https://access.redhat.com/errata/RHSA-2026:37390, https://access.redhat.com/security/cve/CVE-2026-50627, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50627.json, https://lists.apache.org/thread/0jfzz9q992957b99tw7hodcqjfyxwb1m, https://nvd.nist.gov/vuln/detail/CVE-2026-50627, https://bugzilla.redhat.com/show_bug.cgi?id=2488298

Severity

9.1

CVSS Score
0
10

Basic Information

Base CVSS
9.1
EPSS Probability
0.00445%
EPSS Percentile
0.37305%
Introduced Version
04ccbfd709eef8f4af53d6237514fbe9db7ea81f
Fix Available
d2b2776cd44a8d2f391194d90f50ce7b3d61a1f6

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