Home / mailings [USN-8331-1] OpenJDK 11 vulnerabilities
Posted on 28 May 2026
Ubuntu Security==========================================================================Ubuntu Security Notice USN-8331-1
May 28, 2026
openjdk-lts vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in OpenJDK 11.
Software Description:
- openjdk-lts: Open Source Java implementation
Details:
Thomas Beckers discovered that the JAXP component of OpenJDK 11 did not
correctly authenticate certain APIs. A remote unauthenticated attacker
could possibly use this issue to gain unauthorized access to sensitive
information. (CVE-2026-22016)
It was discovered that the Networking component of OpenJDK 11 did not
correctly authenticate certain APIs. A remote unauthenticated attacker
could possibly use this issue to cause a denial of service.
(CVE-2026-34282)
It was discovered that the JSSE component of OpenJDK 11 did not correctly
authenticate certain APIs. A remote unauthenticated attacker could possibly
use this issue to cause a denial of service. (CVE-2026-22021)
It was discovered that the JGSS component of OpenJDK 11 did not correctly
authenticate certain APIs. A remote attacker could possibly use this issue
to obtain sensitive information. (CVE-2026-22013)
It was discovered that the 2D component of OpenJDK 11 did not correctly
handle certain integer arithmetic. If a user or automated system were
tricked into opening a specially crafted file, an attacker could possibly
use this issue to leak sensitive information. (CVE-2026-23865)
It was discovered that the Libraries component of OpenJDK 11 did not
correctly authenticate certain APIs. A remote unauthenticated attacker
could possibly use this issue to cause a denial of service.
(CVE-2026-22018)
Ken Pyle discovered that the Security component of OpenJDK 11 did not
correctly authenticate certain APIs. A local attacker could possibly use
this issue to leak sensitive information. (CVE-2026-22007, CVE-2026-34268)
In addition to security fixes, the updated packages contain bug fixes, new
features, and possibly incompatible changes.
Please see the following for more information:
https://openjdk.org/groups/vulnerability/advisories/2026-04-21
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
openjdk-11-jdk 11.0.31+11-1ubuntu1~26.04.2
openjdk-11-jdk-headless 11.0.31+11-1ubuntu1~26.04.2
openjdk-11-jre 11.0.31+11-1ubuntu1~26.04.2
openjdk-11-jre-headless 11.0.31+11-1ubuntu1~26.04.2
openjdk-11-jre-zero 11.0.31+11-1ubuntu1~26.04.2
Ubuntu 25.10
openjdk-11-jdk 11.0.31+11-1ubuntu1~25.10.2
openjdk-11-jdk-headless 11.0.31+11-1ubuntu1~25.10.2
openjdk-11-jre 11.0.31+11-1ubuntu1~25.10.2
openjdk-11-jre-headless 11.0.31+11-1ubuntu1~25.10.2
openjdk-11-jre-zero 11.0.31+11-1ubuntu1~25.10.2
Ubuntu 24.04 LTS
openjdk-11-jdk 11.0.31+11-1ubuntu1~24.04.2
openjdk-11-jdk-headless 11.0.31+11-1ubuntu1~24.04.2
openjdk-11-jre 11.0.31+11-1ubuntu1~24.04.2
openjdk-11-jre-headless 11.0.31+11-1ubuntu1~24.04.2
openjdk-11-jre-zero 11.0.31+11-1ubuntu1~24.04.2
Ubuntu 22.04 LTS
openjdk-11-jdk 11.0.31+11-1ubuntu1~22.04.2
openjdk-11-jdk-headless 11.0.31+11-1ubuntu1~22.04.2
openjdk-11-jre 11.0.31+11-1ubuntu1~22.04.2
openjdk-11-jre-headless 11.0.31+11-1ubuntu1~22.04.2
openjdk-11-jre-zero 11.0.31+11-1ubuntu1~22.04.2
Ubuntu 20.04 LTS
openjdk-11-jdk 11.0.31+11-1ubuntu1~20.04.2
Available with Ubuntu Pro
openjdk-11-jdk-headless 11.0.31+11-1ubuntu1~20.04.2
Available with Ubuntu Pro
openjdk-11-jre 11.0.31+11-1ubuntu1~20.04.2
Available with Ubuntu Pro
openjdk-11-jre-headless 11.0.31+11-1ubuntu1~20.04.2
Available with Ubuntu Pro
openjdk-11-jre-zero 11.0.31+11-1ubuntu1~20.04.2
Available with Ubuntu Pro
Ubuntu 18.04 LTS
openjdk-11-jdk 11.0.31+11-1ubuntu1~18.04.2
Available with Ubuntu Pro
openjdk-11-jdk-headless 11.0.31+11-1ubuntu1~18.04.2
Available with Ubuntu Pro
openjdk-11-jre 11.0.31+11-1ubuntu1~18.04.2
Available with Ubuntu Pro
openjdk-11-jre-headless 11.0.31+11-1ubuntu1~18.04.2
Available with Ubuntu Pro
openjdk-11-jre-zero 11.0.31+11-1ubuntu1~18.04.2
Available with Ubuntu Pro
This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart any running Java
applications to make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8331-1
CVE-2026-22007, CVE-2026-22013, CVE-2026-22016, CVE-2026-22018,
CVE-2026-22021, CVE-2026-23865, CVE-2026-34268, CVE-2026-34282
Package Information:
https://launchpad.net/ubuntu/+source/openjdk-lts/11.0.31+11-1ubuntu1~26.04.2
https://launchpad.net/ubuntu/+source/openjdk-lts/11.0.31+11-1ubuntu1~25.10.2
https://launchpad.net/ubuntu/+source/openjdk-lts/11.0.31+11-1ubuntu1~24.04.2
https://launchpad.net/ubuntu/+source/openjdk-lts/11.0.31+11-1ubuntu1~22.04.2
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