RHSA-2026:55787 — Security Advisory
Red Hat Security Advisory: java-21-openjdk security update
Severity
ModerateRed Hat Product Security
Products
Official CSAF product identity
Published · August 20, 2026
Updated · November 2, 2026
Topic
An update for java-21-openjdk is now available for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.4 Extended Update Support, Red Hat Enterprise Linux 9.6 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 10.0 Extended Update Support, and Red Hat Enterprise Linux 10.
Red Hat Product Security has rated this update as having a security impact of Moderate. 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
The OpenJDK 21 packages provide the OpenJDK 21 Java Runtime Environment and the OpenJDK 21 Java Software Development Kit.
Security Fix(es):
-
JDK: Improve Resource Resolving (CVE-2026-60589)
-
JDK: Enhance HTTP Connections (CVE-2026-61308)
-
JDK: Enhance TLS server (CVE-2026-70907)
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.