This security update for JDK Mission Control (jmc) addresses two vulnerabilities: an information disclosure flaw in lz4-java (CVE-2025-66566) and an HTTP request smuggling vulnerability in Eclipse Jetty (CVE-2026-2332, CVSS 7.4 HIGH). The Jetty vulnerability affects versions 9.4.0 through 9.4.59, 10.0.0 through 10.0.27, 11.0.0 through 11.0.27, 12.0.0 through 12.0.32, and 12.1.0 through 12.1.6, and is fixed in versions 9.4.60, 10.0.28, 11.0.28, 12.0.33, and 12.1.7. Red Hat has rated this update as Important for Red Hat Enterprise Linux 9.
Red Hat Product Errata RHSA-2026:20568 - Security Advisory Issued: 2026-05-26 Updated: 2026-05-26 RHSA-2026:20568 - Security Advisory Overview Updated Packages Synopsis Important: jmc security update Type/Severity Security Advisory: Important Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for jmc is now available for Red Hat Enterprise Linux 9. 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 JDK Mission Control is a powerful profiler for HotSpot JVMs and has an advanced set of tools that enables efficient and detailed analysis of the extensive data collected by JDK Flight Recorder. The tool chain enables developers and administrators to collect and analyze data from Java applications running locally or deployed in production environments. Security Fix(es): lz4-java: lz4-java: Information Disclosure via Insufficient Output Buffer Clearing (CVE-2025-66566) org.eclipse.jetty/jetty- http: HTTP request smuggling via chunked extension quoted-string parsing (CVE-2026-2332) 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 For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Affected Products Red Hat CodeReady Linux Builder for x86_64 9 x86_64 Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 9.8 x86_64 Fixes BZ - 2419500 - CVE-2025-66566 lz4-java: lz4-java: Information Disclosure via Insufficient Output Buffer Clearing BZ - 2458187 - CVE-2026-2332 org.eclipse.jetty/jetty-http: HTTP request smuggling via chunked extension quoted-string parsing CVEs CVE-2025-66566 CVE-2026-2332 References https://access.redhat.com/security/updates/classification/#important Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat CodeReady Linux Builder for x86_64 9 SRPM jmc-8.2.0-19.el9_8.2.src.rpm SHA-256: 77b184468b9f3bc39ac293429a4bf4cb23fb1b4d255b621e45e819be3d8f17e0 x86_64 jmc-8.2.0-19.el9_8.2.x86_64.rpm SHA-256: 93481741676696299883a4d6a9d1d759f482cef493ae615e5e767b842923959b Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 9.8 SRPM jmc-8.2.0-19.el9_8.2.src.rpm SHA-256: 77b184468b9f3bc39ac293429a4bf4cb23fb1b4d255b621e45e819be3d8f17e0 x86_64 jmc-8.2.0-19.el9_8.2.x86_64.rpm SHA-256: 93481741676696299883a4d6a9d1d759f482cef493ae615e5e767b842923959b The Red Hat security contact is secalert@redhat.com . More contact details at https://access.redhat.com/security/team/contact/ .