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…

PriorityP351critical9.1CVSS 3.1

AVNACLPRHUINSCCHIHAH

EPSS

0.45%

36.0th percentile

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, which fixes this issue.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
apache	cxf	< 4.1.7	4.1.7
apache	cxf	>= 4.2.0 < 4.2.2	4.2.2
apache_software_foundation	apache_cxf	< 4.1.7	4.1.7
apache_software_foundation	apache_cxf	>= 4.2.0 < 4.2.2	4.2.2

CVSS provenance

nvdv3.19.1CRITICALCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

vendor_redhat9.1CRITICAL

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