PatchSiren cyber security CVE debrief

CVE-2026-50627 Apache Software Foundation CVE debrief

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.

Vendor: Apache Software Foundation
Product: Apache CXF
CVSS: CRITICAL 9.1
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-12
Original CVE updated: 2026-08-07
Advisory published: 2026-06-12
Advisory updated: 2026-08-07

Who should care

Users of Apache CXF are recommended to upgrade to versions 4.2.2 or 4.1.7, which fixes this issue.

Technical summary

Defensive priority

high

Recommended defensive actions

Upgrade to Apache CXF versions 4.2.2 or 4.1.7.

Evidence notes

CVE-2026-50627 was published on [cvePublishedAt] and modified on [cveModifiedAt].

Sources and references

Verified primary and authoritative sources

CVE-2026-50627 CVE Program record
Publisher, destination, and source semantics verified

URL: https://www.cve.org/CVERecord?id=CVE-2026-50627

CVE Program - Official CVE Program record with source-provided CVE metadata.
CVE-2026-50627 NVD vulnerability detail
Publisher, destination, and source semantics verified

URL: https://nvd.nist.gov/vuln/detail/CVE-2026-50627

NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Source reference
Unverified legacy reference

URL: https://lists.apache.org/thread/0jfzz9q992957b99tw7hodcqjfyxwb1m

[email protected]

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.