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.
Published: 2026-08-11
Score: 7.4 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

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'}


Subscriptions

Redhat Jboss Enterprise Application Platform Jbosseapxp
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-08-11T08:49:40.484Z

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

Link: CVE-2026-15554

cve-icon Vulnrichment

No data.

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

Weaknesses