RHSA-2026:96229: Important: Red Hat JBoss Web Server 6.2.6 release and security update

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 (modcluster), the PicketLink Vault extension for Apache Tomcat, and the Tomcat Native library.This release of Red Hat JBoss Web Server 6.2.6 serves as a replacement for Red Hat JBoss Web Server 6.2.5. 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): modcluster-core: modcluster Advertise Listener: unauthenticated DoS via crafted multicast datagram (CVE-2026-76166) jws6-tomcat-native: Apache Tomcat Native: Client certificate verification requirements can be down-graded via race condition (CVE-2026-86247) jws6-tomcat: Apache Tomcat: Denial of Service via AJP request (CVE-2026-78383) jws6-tomcat: Apache Tomcat: Denial of Service via busy wait during WebSocket close (CVE-2026-77791) jws6-tomcat: Apache Tomcat: HTTP/2 request smuggling due to header mix-up (CVE-2026-86350) jws6-tomcat: Apache Tomcat: Authentication Bypass in WebSocket Endpoints (CVE-2026-76183) jws6-tomcat: Apache Tomcat: Denial of Service due to lost asynchronous WebSocket write timeouts (CVE-2026-79677) jws6-tomcat: Apache Tomcat: TLS implementations ignore Certificate Revocation Lists (CVE-2026-73581) jws6-tomcat: Apache Tomcat: OCSP checks sometimes soft-fail with FFM even when soft-fail is disabled (CVE-2026-86248) jws6-tomcat-native: Apache Tomcat Native: Denial of Service via buffer over-read during TLS handshake (CVE-2026-86243) jws6-tomcat-native: Apache Tomcat Native: Weakened TLS connection security via insecure default configuration (CVE-2026-86246) 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.

— Red Hat