Apache CXF's STSTokenValidator and Security Token Service (STS) cached validated security tokens under a non-cryptographic 32-bit hash of the token (Java Arrays.hashCode/hashCode()), and treated a cache hit as proof that the presented token had already been validated. An attacker could craft a token (for example a UsernameToken or a self-signed SAML Assertion) whose hash collides with a cached entry. The token would then be accepted without password validation, signature trust verification or a call to the STS. This could let the attacker authenticate as another user and, through STS token validation or renewal, obtain STS-signed tokens for that identity. Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue.
History

Tue, 20 Oct 2026 12:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*

Thu, 15 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}


Sun, 11 Oct 2026 12:45:00 +0000

Type Values Removed Values Added
First Time appeared Apache
Apache cxf
Vendors & Products Apache
Apache cxf

Sat, 10 Oct 2026 02:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-665

Sat, 10 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-328
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'}

threat_severity

Important


Fri, 09 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
References

Fri, 09 Oct 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-665

Fri, 09 Oct 2026 10:30:00 +0000

Type Values Removed Values Added
Description Apache CXF's STSTokenValidator and Security Token Service (STS) cached validated security tokens under a non-cryptographic 32-bit hash of the token (Java Arrays.hashCode/hashCode()), and treated a cache hit as proof that the presented token had already been validated. An attacker could craft a token (for example a UsernameToken or a self-signed SAML Assertion) whose hash collides with a cached entry. The token would then be accepted without password validation, signature trust verification or a call to the STS. This could let the attacker authenticate as another user and, through STS token validation or renewal, obtain STS-signed tokens for that identity. Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue.
Title Apache CXF: Authentication bypass via weak cache keys for validated STS tokens
References

cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published: 2026-10-09T10:18:56.568Z

Updated: 2026-10-15T16:28:54.151Z

Reserved: 2026-09-24T15:28:31.804Z

Link: CVE-2026-97468

cve-icon Vulnrichment

Updated: 2026-10-09T11:08:02.810Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-09T11:17:03.270

Modified: 2026-10-20T12:40:41.170

Link: CVE-2026-97468

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-09T10:18:56Z

Links: CVE-2026-97468 - Bugzilla