RHSA-2026:0383: Important: Red Hat JBoss Enterprise Application Platform 8.1.3 security update
Published Jan 8, 2026
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Updated
Important: Red Hat JBoss Enterprise Application Platform 8.1.3 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 8.1.3 serves as a replacement for Red Hat JBoss Enterprise Application Platform 8.1.2, and includes bug fixes and enhancements. See the Red Hat JBoss Enterprise Application Platform 8.1.3 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-8.1.z] (CVE-2025-12543)
undertow: OutOfMemory when parsing form data encoding with application/x-www-form-urlencoded [eap-8.1.z] (CVE-2024-3884)
undertow-core: Undertow MadeYouReset HTTP/2 DDoS Vulnerability [eap-8.1.z] (CVE-2025-9784)
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-2026:0383 is classified as Important.
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How do I fix RHSA-2026:0383?
You can fix RHSA-2026:0383 by applying the security update provided by Red Hat for JBoss Enterprise Application Platform 8.1.3.
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What vulnerabilities are addressed in RHSA-2026:0383?
RHSA-2026:0383 addresses multiple security vulnerabilities in the Red Hat JBoss Enterprise Application Platform.
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Which versions of JBoss are affected by RHSA-2026:0383?
Versions of JBoss Enterprise Application Platform prior to 8.1.3 are affected by RHSA-2026:0383.
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How can I verify if my system is vulnerable to RHSA-2026:0383?
To verify if your system is vulnerable to RHSA-2026:0383, check the installed version of JBoss Enterprise Application Platform against the advisory findings.
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