RHSA-2026:99099 - Security Advisory

Topic

A security update is now available for Red Hat JBoss Enterprise Application
Platform 7.4. 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 Enterprise Application Platform 7 is a platform for Java applications based on the WildFly application runtime. This release of Red Hat JBoss Enterprise Application Platform 7.4.26 serves as a replacement for Red Hat JBoss Enterprise Application Platform 7.4.25, and includes bug fixes and enhancements. See the Red Hat JBoss Enterprise Application Platform 7.4.26 Release Notes for information about the most significant bug fixes and enhancements included in this release.

Security Fix(es):

• jackson-databind: jackson-databind: Ignored properties can be unexpectedly modified (CVE-2026-54515)
• jgroups: artemis cluster password leak via jgroups spoof (CVE-2026-49364)
• openjdk-orb: Incomplete fix for CVE-2026-15560,unauthed class loading via IIOP in EAP (CVE-2026-84725)
• artemis-server: Apache Artemis — session hijack via missing authentication (CVE-2026-57967)
• artemis-server: artemis core protocol permits unauthed queue creation (CVE-2026-49362)
• cxf: Apache CXF: Remote Code Execution via unsafe deserialization of JMS ObjectMessage (CVE-2026-66909)

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 the update, make sure all previously released errata relevant to your system have been applied. Also, back up your existing installation, including all applications, configuration files, databases and database settings. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258

Affected Products

• JBoss Enterprise Application Platform 7.4 ELS 7.4 for RHEL 9 x86_64

Fixes

• BZ - 2477945 - CVE-2026-49362 artemis-server: undertow-core: wildfly-messaging-activemq-subsystem: artemis core protocol permits unauthed queue creation
• BZ - 2478013 - CVE-2026-49364 wildfly-messaging-activemq-subsystem: artemis-server: jgroups: artemis cluster password leak via jgroups spoof
• BZ - 2480638 - CVE-2026-57967 artemis-server: Apache Artemis ? session hijack via missing authentication
• BZ - 2492016 - CVE-2026-54515 jackson-databind: jackson-databind: Ignored properties can be unexpectedly modified
• BZ - 2511983 - CVE-2026-66909 org.apache.cxf/cxf: Apache CXF: Remote Code Execution via unsafe deserialization of JMS ObjectMessage
• BZ - 2527228 - CVE-2026-84725 openjdk-orb: Incomplete fix for CVE-2026-15560,unauthed class loading via IIOP in EAP
• JBEAP-34322 - Tracker bug for the EAP 7.4.26 release for RHEL-9
• JBEAP-33495 - (7.4.z) Upgrade WildFly Elytron from 1.15.27.Final-redhat-00002 to 1.15.29.Final-redhat-00001
• JBEAP-34522 - (7.4.z) Upgrade Undertow from 2.2.40.SP3-redhat-00001 to 2.2.40.SP4-redhat-00001
• JBEAP-34913 - [GSS](7.4.z) ELY-3073 - Upgrade jackson-databind to 2.18.10 for elytron 1.15.x to address various CVEs
• JBEAP-34914 - [GSS](7.4.z) Upgrade WildFly Elytron from 1.15.29.Final-redhat-00001 to 1.15.30.Final-redhat-00001

CVEs

• CVE-2026-49362
• CVE-2026-49364
• CVE-2026-54515
• CVE-2026-57967
• CVE-2026-66909
• CVE-2026-84725

References

• https://access.redhat.com/security/updates/classification/#important
• https://docs.redhat.com/en/documentation/red_hat_jboss_enterprise_application_platform/7.4
• https://docs.redhat.com/en/documentation/red_hat_jboss_enterprise_application_platform/7.4/html-single/installation_guide/index