Incorrect Implementation of Authentication Algorithm Affecting cxf-rt-rs-security-oauth2-saml package, versions *


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.78% (54th percentile)

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  • Snyk IDSNYK-RHEL7-CXFRTRSSECURITYOAUTH2SAML-17345876
  • published16 Jun 2026
  • disclosed12 Jun 2026

Introduced: 12 Jun 2026

CVE-2026-50627  (opens in a new tab)
CWE-303  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 cxf-rt-rs-security-oauth2-saml.

NVD Description

Note: Versions mentioned in the description apply only to the upstream cxf-rt-rs-security-oauth2-saml package and not the cxf-rt-rs-security-oauth2-saml package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1