RHSA-2026:3891: Important: Red Hat JBoss Enterprise Application Platform 8.0.12 security update
Published Mar 5, 2026
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Updated
Important: Red Hat JBoss Enterprise Application Platform 8.0.12 security update
Other sources
Red Hat JBoss Enterprise Application Platform 8 is a platform for Java applications based on the WildFly application runtime. This release of Red Hat JBoss Enterprise Application Platform 8.0.12 serves as a replacement for Red Hat JBoss Enterprise Application Platform 8.0.11, and includes bug fixes and enhancements. See the Red Hat JBoss Enterprise Application Platform 8.0.12 Release Notes for information about the most significant bug fixes and enhancements included in this release.Security Fix(es): undertow-core: Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache Poisoning and SSRF [eap-8.0.z] (CVE-2025-12543)
undertow-core: Undertow MadeYouReset HTTP/2 DDoS Vulnerability (CVE-2025-9784)
undertow: OutOfMemory when parsing form data encoding with application/x-www-form-urlencoded [eap-8.0.z] (CVE-2024-3884)
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.
The severity of RHSA-2026:3891 is classified as Important.
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How do I fix RHSA-2026:3891?
To fix RHSA-2026:3891, you should update to the latest versions of the affected packages listed in the advisory.
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Which products are affected by RHSA-2026:3891?
RHSA-2026:3891 affects several packages within Red Hat JBoss Enterprise Application Platform 8.
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What vulnerabilities does RHSA-2026:3891 address?
RHSA-2026:3891 addresses multiple vulnerabilities related to security issues in JBoss Enterprise Application Platform.
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How can I determine if my system is affected by RHSA-2026:3891?
You can determine if your system is affected by checking the installed versions of the packages listed in the advisory against the vulnerable versions.
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