UnratedApache Software Foundation

Advisory [CVE-2026-50627] Apache CXF: OAuth2: Missing JWT Audience and Issuer Validation in Access Token Validator

This security Apache Software Foundation advisory covers CVE-2026-50627 affecting Apache CXF, Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16.

CVE-2026-50627 Published Jun 12, 2026Updated by vendor Aug 7, 2026

CVE-2026-50627

Affected products & platforms

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Summary

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.

Affected products named by the advisory: Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16.

Affected versions

Apache CXF 4.2.0 before 4.2.2
Apache CXF 4.0.0 before 4.1.7
Apache CXF before 3.6.12

Official advisory · medium-confidence parse· fetched 2 months ago·verify at source

Fixed versions

4.2.2
4.1.7
3.6.12

Official advisory · medium-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fixes this issue.

Official advisory · medium-confidence parse· fetched 2 months ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Official vendor advisoryofficial
Official advisory page fetched and parsed for the summary, affected/fixed versions and remediation guidance it provides.
Apache Software Foundation
CVE.org CNA recordCVE.org
Independent CNA record used for near-real-time discovery and missed-CVE reconciliation. Discovered from the machine-readable feed https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/delta.json; this link opens the CVE.org record for CVE-2026-50627 instead of the raw feed document.
CVE Program

Cross-references

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CVE-2026-50627NVD CVE.org MITRE

Official resources

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