Bug 2542847 (CVE-2026-86248)

Summary:	CVE-2026-86248 tomcat: Apache Tomcat: OCSP checks sometimes soft-fail with FFM even when soft-fail is disabled
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	csutherl, dsoumis, jclere, jwon, pjindal, plodge, rhel-process-autobot, rmaucher, szappis, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in Apache Tomcat. When client certificate authentication is configured with strict certificate revocation checking, Online Certificate Status Protocol (OCSP) verification may improperly allow connections instead of failing as intended. A remote attacker presenting an invalid or revoked client certificate could exploit this issue to bypass authentication and gain unauthorized access to protected resources.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2543044
Bug Blocks:

Description OSIDB Bzimport 2026-09-28 22:46:23 UTC

CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat.



This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.25, from 10.1.22 through 10.1.59, from 9.0.92 through 9.0.121.



Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.

Comment 3 Jon Orris 2026-11-03 13:50:07 UTC

This issue has been addressed in the following products:

  Red Hat JBoss Web Server 7.0.3

Via RHSA-2026:93622 https://access.redhat.com/errata/RHSA-2026:93622

Comment 4 Jon Orris 2026-11-03 13:51:30 UTC

This issue has been addressed in the following products:

  Red Hat JBoss Web Server 7.0 on RHEL 10
  Red Hat JBoss Web Server 7.0 on RHEL 8
  Red Hat JBoss Web Server 7.0 on RHEL 9

Via RHSA-2026:93618 https://access.redhat.com/errata/RHSA-2026:93618

Comment 5 errata-xmlrpc 2026-11-09 17:33:30 UTC

This issue has been addressed in the following products:

  Red Hat JBoss Web Server 6.2.6

Via RHSA-2026:96229 https://access.redhat.com/errata/RHSA-2026:96229

Comment 6 errata-xmlrpc 2026-11-09 17:37:17 UTC

This issue has been addressed in the following products:

  Red Hat JBoss Web Server 6.2 on RHEL 10
  Red Hat JBoss Web Server 6.2 on RHEL 8
  Red Hat JBoss Web Server 6.2 on RHEL 9

Via RHSA-2026:96228 https://access.redhat.com/errata/RHSA-2026:96228