CVE-2026-50627

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 v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.3 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://lists.apache.org/thread/0jfzz9q992957b99tw7hodcqjfyxwb1m	Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/06/11/4	Mailing List Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:37390
https://access.redhat.com/security/cve/CVE-2026-50627
https://bugzilla.redhat.com/show_bug.cgi?id=2488298
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50627.json

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:apache:cxf::::::::
	cpe:2.3:a:apache:cxf::::::::

History

26 Oct 2026, 11:10

Type	Values Removed	Values Added
Summary		(es) La clase JwtAccessTokenValidator en Apache CXF no valida las reclamaciones ’aud’ (Audiencia) de los tokens de acceso JWT entrantes. Esto permite que un JWT emitido para un Servidor de Recursos sea reproducido con éxito contra un Servidor de Recursos completamente diferente, lo que lleva a ataques de Confusión/Enrutamiento de Tokens. Se recomienda a los usuarios actualizar a las versiones 4.2.2 o 4.1.7, que corrige este problema.

Information

Published : 2026-06-12 10:16

Updated : 2026-10-26 11:10

NVD link : CVE-2026-50627

Mitre link : CVE-2026-50627

CVE.ORG link : CVE-2026-50627

JSON object : View

Products Affected

apache

cxf

CWE

CWE-289

Authentication Bypass by Alternate Name

CWE-303

Incorrect Implementation of Authentication Algorithm

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