RHSA-2026:73981 - Security Advisory

Topic

Red Hat JBoss Web Server 6.2.5 is now available for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, and Red Hat Enterprise Linux 10.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Red Hat JBoss Web Server is a fully integrated and certified set of components for hosting Java web applications. It is comprised of the Apache Tomcat Servlet container, JBoss HTTP Connector (mod_cluster), the PicketLink Vault extension for Apache Tomcat, and the Tomcat Native library.

This release of Red Hat JBoss Web Server 6.2.5 serves as a replacement for Red Hat JBoss Web Server 6.2.4. This release includes bug fixes, enhancements and component upgrades, which are documented in the Release Notes that are linked to in the References section.

Security Fix(es):

• tomcat-catalina: Apache Tomcat: Misleading security logs due to incorrect control flow (CVE-2026-55276)
• tomcat-coyote-ffm: Apache Tomcat: Error condition not handled when configuring CRL (CVE-2026-53434)
• jws6-tomcat: Apache Tomcat: Security constraint bypass via improper URL encoding in rewrite valve (CVE-2026-59083)
• tomcat: Apache Tomcat: Local information disclosure via Unix domain socket TOCTOU race condition (CVE-2026-65183)
• tomcat: Apache Tomcat: Security constraint bypass due to improper access control (CVE-2026-65182)
• tomcat: Apache Tomcat: Access control bypass due to off-by-one error in RewriteValve [N] flag processing (CVE-2026-65927)
• tomcat: Apache Tomcat: Denial of Service via HTTP/2 allocation leak (CVE-2026-68763)
• tomcat: Apache Tomcat: Unauthorized resource access via FORM authentication bypass (CVE-2026-68525)
• tomcat: Apache Tomcat - DoS in WebSocket chat example (CVE-2026-66299)
• tomcat: Apache Tomcat: Authenticated WebSocket session persists after HTTP session termination (CVE-2026-73180)
• tomcat: Apache Tomcat: Improper Authorization allows bypass of declarative role constraints (CVE-2026-66422)
• tomcat: Apache Tomcat: Improper Authentication due to principal lookup failure (CVE-2026-68569)
• tomcat: Apache Tomcat: Authentication bypass via limited replay attack in DIGEST authenticator (CVE-2026-65905)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

• JBoss Enterprise Web Server 6 for RHEL 10 x86_64
• JBoss Enterprise Web Server 6 for RHEL 9 x86_64
• JBoss Enterprise Web Server 6 for RHEL 8 x86_64

Fixes

• BZ - 2494668 - CVE-2026-53434 tomcat: Apache Tomcat: Error condition not handled when configuring CRLs
• BZ - 2494675 - CVE-2026-55276 tomcat: Apache Tomcat: Misleading security logs due to incorrect control flow
• BZ - 2499917 - CVE-2026-59083 tomcat: Apache Tomcat: Security constraint bypass via improper URL encoding in rewrite valve
• BZ - 2508085 - CVE-2026-66299 tomcat: Apache Tomcat: Denial of Service via WebSocket chat example

CVEs

• CVE-2026-53434
• CVE-2026-55276
• CVE-2026-59083
• CVE-2026-65182
• CVE-2026-65183
• CVE-2026-65905
• CVE-2026-65927
• CVE-2026-66299
• CVE-2026-66422
• CVE-2026-68525
• CVE-2026-68569
• CVE-2026-68763
• CVE-2026-73180

References

• https://access.redhat.com/security/updates/classification/#important
• https://docs.redhat.com/en/documentation/red_hat_jboss_web_server/6.2/html/red_hat_jboss_web_server_6.2_service_pack_5_release_notes/index