RHSA-2026:3891HighCVSS 9.6

Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.0.12 security update

Published
March 5, 2026
Last Modified
August 7, 2026

🔗 CVE IDs covered (3)

CVE-2025-9784 →CVE-2025-12543 →CVE-2024-3884 →

📋 Description

CVE-2024-3884 — undertow: OutOfMemory when parsing form data encoding with application/x-www-form-urlencoded CVE-2025-9784 — undertow: Undertow MadeYouReset HTTP/2 DDoS Vulnerability CVE-2025-12543 — undertow-core: Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache Poisoning and SSRF

🎯 Affected products114

  • Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-activemq-artemis-0:2.33.0-4.redhat_00019.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-activemq-artemis-0:2.33.0-4.redhat_00019.1.el9eap.src as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-activemq-artemis-cli-0:2.33.0-4.redhat_00019.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-activemq-artemis-commons-0:2.33.0-4.redhat_00019.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-activemq-artemis-core-client-0:2.33.0-4.redhat_00019.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-activemq-artemis-dto-0:2.33.0-4.redhat_00019.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-activemq-artemis-hornetq-protocol-0:2.33.0-4.redhat_00019.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-activemq-artemis-hqclient-protocol-0:2.33.0-4.redhat_00019.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-activemq-artemis-jakarta-client-0:2.33.0-4.redhat_00019.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-activemq-artemis-jakarta-ra-0:2.33.0-4.redhat_00019.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-activemq-artemis-jakarta-server-0:2.33.0-4.redhat_00019.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-activemq-artemis-jakarta-service-extensions-0:2.33.0-4.redhat_00019.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-activemq-artemis-jdbc-store-0:2.33.0-4.redhat_00019.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-activemq-artemis-journal-0:2.33.0-4.redhat_00019.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-activemq-artemis-selector-0:2.33.0-4.redhat_00019.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-activemq-artemis-server-0:2.33.0-4.redhat_00019.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-apache-commons-codec-0:1.17.2-1.redhat_00001.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-apache-commons-codec-0:1.17.2-1.redhat_00001.1.el9eap.src as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-apache-cxf-0:4.0.10-2.redhat_00001.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-apache-cxf-0:4.0.10-2.redhat_00001.1.el9eap.src as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-apache-cxf-rt-0:4.0.10-2.redhat_00001.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-apache-cxf-services-0:4.0.10-2.redhat_00001.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-apache-cxf-tools-0:4.0.10-2.redhat_00001.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-bouncycastle-0:1.83.0-1.redhat_00001.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-bouncycastle-0:1.83.0-1.redhat_00001.1.el9eap.src as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-bouncycastle-jmail-0:1.83.0-1.redhat_00001.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-bouncycastle-pg-0:1.83.0-1.redhat_00001.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-bouncycastle-pkix-0:1.83.0-1.redhat_00001.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • eap8-bouncycastle-prov-0:1.83.0-1.redhat_00001.1.el9eap.noarch as a component of Red Hat JBoss EAP 8.0 for RHEL 9
  • +84 more not shown

✅ Remediation

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 Workaround: It is possible to mitigate the vulnerability by performing an upper-level verification to ensure the content size sent server side is within the allowed parameters. Workaround: No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability. Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.

🔗 References (25)