CVE-2026-50627

[CVE catalog]

Severity

Critical · CVSS 9.1CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Published

Jun 11, 2026, 10:00:00 PM UTC

Source

[NVD] · [CVE record]

EPSS

4.52% · Oct 25, 2026

A flaw was found in Apache CXF. The `JwtAccessTokenValidator` class fails to properly validate the 'aud' (Audience) claims within incoming JSON Web Token (JWT) access tokens. This vulnerability allows an attacker to reuse a JWT, originally intended for one resource server, against a different resource server. This can lead to token confusion and routing attacks, potentially granting unauthorized access or information disclosure. apache-cxf: org.apache.cxf/cxf-rt-rs-security-oauth2: Apache CXF: Token Confusion/Routing attacks due to improper validation of JWT audience claims The Red Hat Product Security team has assessed the severity of this vulnerability as Important. Although authentication is required (the attacker must possess a valid JWT issued for some resource server), the flaw allows unauthorized access to protected resources on any other resource server using Apache CXF's JwtAccessTokenValidator, enabling full read/write operations across trust boundaries due to the complete absence of audience claim validation in the default configuration. The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.