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Critical severity9.1NVD Advisory· Published Jun 12, 2026· Updated Aug 7, 2026

CVE-2026-50627

CVE-2026-50627

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
org.apache.cxf:cxf-rt-rs-security-oauth2Maven
>= 4.2.0, < 4.2.24.2.2
org.apache.cxf:cxf-rt-rs-security-oauth2Maven
< 4.1.74.1.7

Affected products

2
  • Apache/Cxf2 versions
    cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*range: <4.1.7
    • (no CPE)range: before 4.2.2, 4.1.x before 4.1.7, 3.6.x before 3.6.12

Patches

Vulnerability mechanics

References

8

News mentions

1