A timing side-channel vulnerability in the Bouncy Castle library (CVE-2026-5598) can lead to private key leakage through non-constant time comparisons. This security update for Red Hat JBoss Enterprise Application Platform 7.4 upgrades the Bouncy Castle dependency to version 1.84 or later to address the flaw. The advisory is rated Important, and administrators should apply the JBoss EAP 7.4.24 update after reviewing the referenced solution documentation.
Red Hat Product Errata RHSA-2026:12269 - Security Advisory Issued: 2026-04-30 Updated: 2026-04-30 RHSA-2026:12269 - Security Advisory Overview Synopsis Important: Red Hat JBoss Enterprise Application Platform 7.4.24 security update Type/Severity Security Advisory: Important 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 asynchronous patch is a security update for Red Hat JBoss Enterprise Application Platform 7.4. Security Fix(es): bouncycastle: BC-JAVA: private key leakage via non-constant time comparisons (CVE-2026-5598) A Red Hat Security Bulletin which addresses further details about this flaw is available in the References section. For more details about the security issue(s), including the impact, a CVSS score, acknowledgements, 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 Text-Only Advisories x86_64 JBoss Enterprise Application Platform 7.4 ELS 7 x86_64 Fixes BZ - 2458635 - CVE-2026-5598 bouncycastle: BC-JAVA: private key leakage via non-constant time comparisons JBEAP-32774 - [PST](7.4.z) Upgrade bouncycastle from 1.78.1 to 1.84+ CVEs CVE-2026-5598 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 https://access.redhat.com/articles/7137599 The Red Hat security contact is secalert@redhat.com . More contact details at https://access.redhat.com/security/team/contact/ .