CVE-2026-22021

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

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Severity

Moderate

Red Hat Product Security

5.3

CVSS 3.1

Review impact separately from score.

Published · April 22, 2026

Updated · October 20, 2026

Description

A flaw was found in OpenJDK. An unauthenticated remote attacker could exploit this vulnerability to cause a Denial of Service (DoS) by triggering a stack overflow during certificate chain validation. By supplying a specially crafted certificate chain, an attacker can cause the affected application to crash.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE-674 · Uncontrolled Recursion