CVE Database›CVE-2026-24734

CVE-2026-24734

tomcat: Apache Tomcat: Certificate revocation bypass due to improper OCSP response validation

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Severity

Important

Red Hat Product Security

7.4

CVSS 3.1

Review impact separately from score.

Published · February 18, 2026

Updated · September 28, 2026

Description

A flaw was found in Apache Tomcat. When an Online Certificate Status Protocol (OCSP) responder is used, the Tomcat Native component, and Tomcat's FFM port of the Tomcat Native code, does not properly verify or check the freshness of the OCSP response. This improper input validation vulnerability could allow an attacker to bypass certificate revocation checks, potentially leading to the acceptance of revoked certificates.

Statement

This vulnerability doesn't affect the Apache Tomcat distributed with Red Hat Enterprise 8 and Red Hat Enterprise up to the version 9.7 as the vulnerable code is not built. The vulnerable code is compiled with Red Hat Enterprise Linux 9.8 and above.

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 · 7.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE-295 · Improper Certificate Validation