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Critical Issues with Debian Trixie OpenJDK-21 DSA-6112-1 Announcement

debian
Calendar Grey January 27, 2026
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OpenJDK 21 vulnerabilities lead to certificate validation issues and CRLF injections. Upgrade recommended for Debian trixie.
Several vulnerabilities have been discovered in the OpenJDK Java runtime, which may result in incorrect certificate validation, CRLF injection or man-in-the-middle attacks
Topics%20covered

Topics Covered

security advisory man-in-the-middle crlf injection openjdk certificate validation trixie

Summary

For the stable distribution (trixie), these problems have been fixed in
version 21.0.10+7-1~deb13u1.

We recommend that you upgrade your openjdk-21 packages.

For the detailed security status of openjdk-21 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/openjdk-21

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/



Severity
critical
Lowest
Low
Medium
High
Critical

Package: openjdk-21
CVE ID: CVE-2026-21925 CVE-2026-21932 CVE-2026-21933

Topics%20covered

Topics Covered

security advisory man-in-the-middle crlf injection openjdk certificate validation trixie

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