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MEDIUM

openjdk: Enhance certificate chain validation (Oracle CPU 2026-04)

Published Apr 21, 2026

Description

Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Supported versions that are affected are Oracle Java SE: 8u481, 8u481-b50, 8u481-perf, 11.0.30, 17.0.18, 21.0.10, 25.0.2, 26; Oracle GraalVM for JDK: 17.0.18 and 21.0.10; Oracle GraalVM Enterprise Edition: 21.3.17. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTPS to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).

Affected products

Remediation

No remediation recorded yet.

Metrics

Weaknesses (2)

CWE-400

Uncontrolled Resource Consumption

CWE-674

References (6)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner oracle
Published Apr 21, 2026
Updated Apr 22, 2026
Reserved Jan 5, 2026
Link CVE-2026-22021
CISA Vulnrichment
Updated Apr 22, 2026
NVD
Status Analyzed
Modified Jun 17, 2026
Link CVE-2026-22021
Red Hat
Severity Moderate
Public date Apr 21, 2026
Links CVE-2026-22021 - Bugzilla