RHSA-2026:25126 - Security Advisory

Topic

A security update is now available for Red Hat JBoss Enterprise Application Platform 8.1. 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 8 is a platform for Java applications based on the WildFly application runtime.

This asynchronous patch is an update for Red Hat JBoss Enterprise Application Platform 8.1. See Release Notes for information about the most significant bug fixes and enhancements included in this release.

Security Fix(es):

• jetty-server: Eclipse Jetty: Denial of Service due to unreleased JDK Inflater from compressed HTTP requests important (CVE-2026-1605)
• undertow-core: Undertow: Request Smuggling via Malformed HTTP Request Headers (CVE-2026-28369)
• undertow-core: Undertow: Request smuggling via inconsistent header parsing (CVE-2026-28368)
• undertow-core: Undertow: Request smuggling via `\r\r\r` as a header block terminator (CVE-2026-28367)

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 Text-Only Advisories x86_64

Fixes

• BZ - 2443260 - CVE-2026-28367 undertow: Undertow: Request smuggling via `\r\r\r` as a header block terminator
• BZ - 2443261 - CVE-2026-28368 undertow: Undertow: Request smuggling via inconsistent header parsing
• BZ - 2443262 - CVE-2026-28369 undertow: Undertow: Request Smuggling via Malformed HTTP Request Headers
• BZ - 2444815 - CVE-2026-1605 org.eclipse.jetty/jetty-server: Eclipse Jetty: Denial of Service due to unreleased JDK Inflater from compressed HTTP requests

CVEs

• CVE-2026-1605
• CVE-2026-28367
• CVE-2026-28368
• CVE-2026-28369

References

• https://access.redhat.com/security/updates/classification/#important
• https://docs.redhat.com/en/documentation/red_hat_jboss_enterprise_application_platform/8.1
• https://docs.redhat.com/en/documentation/red_hat_jboss_enterprise_application_platform/8.1/html/release_notes_for_red_hat_jboss_enterprise_application_platform_8.1/index
• https://access.redhat.com/articles/7129481