the Undertow AJP listener honours forged ssl_cert and is_ssl AJP attributes without requiring any shared-secret authentication. This enables an unauthenticated attacker with direct TCP access to port 8009 to bypass CLIENT-CERT authentication by injecting a forged X.509 certificate via the AJP protocol.
History

Tue, 11 Aug 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 11 Aug 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Tue, 11 Aug 2026 09:15:00 +0000

Type Values Removed Values Added
Description the Undertow AJP listener honours forged ssl_cert and is_ssl AJP attributes without requiring any shared-secret authentication. This enables an unauthenticated attacker with direct TCP access to port 8009 to bypass CLIENT-CERT authentication by injecting a forged X.509 certificate via the AJP protocol.
Title Undertow-core: undertow: authentication bypass via ajp ssl_cert/is_ssl forgery
First Time appeared Redhat
Redhat jboss Enterprise Application Platform
Redhat jbosseapxp
Weaknesses CWE-295
CPEs cpe:/a:redhat:jboss_enterprise_application_platform:7
cpe:/a:redhat:jboss_enterprise_application_platform:8
cpe:/a:redhat:jbosseapxp
Vendors & Products Redhat
Redhat jboss Enterprise Application Platform
Redhat jbosseapxp
References
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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-08-11T13:02:23.139Z

Reserved: 2026-07-13T04:54:33.612Z

Link: CVE-2026-15554

cve-icon Vulnrichment

Updated: 2026-08-11T13:02:16.420Z

cve-icon NVD

Status : Received

Published: 2026-08-11T09:17:12.400

Modified: 2026-08-11T09:17:12.400

Link: CVE-2026-15554

cve-icon Redhat

Severity : Important

Publid Date: 2026-08-11T05:49:31Z

Links: CVE-2026-15554 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-11T11:00:04Z