Review reviewCritical

CVE-2026-50627

Apache Software Foundation Apache CXF, Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16, Red Hat Fuse 7

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.

CVSS: 9.1
EPSS: 0.45%
CISA KEV: Not listed
Published: 2026.06.12

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.45%

Technical severityCVSS 9.1

Vulnerability overview

Affected product and versions

Product: Apache Software Foundation Apache CXF, Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16, Red Hat Fuse 7
Affected versions: >= 4.2.0 < 4.2.2, < 4.1.7
Fixed versions: 4.1.7, 4.2.2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Apache Software Foundation Apache CXF, Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16, Red Hat Fuse 7 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE: CWE-289, CWE-303