CVE-2026-24734 Apache CVE debrief

Who should care

Apache Tomcat users and administrators should be aware of this vulnerability, especially those using OCSP responders. Upgrading to fixed versions is crucial to prevent potential certificate revocation bypass.

Technical summary

The vulnerability exists in Apache Tomcat Native and Tomcat's FFM port of the Tomcat Native code. It affects Apache Tomcat Native versions from 1.3.0 through 1.3.4 and from 2.0.0 through 2.0.11, and Apache Tomcat versions from 11.0.0-M1 through 11.0.17, from 10.1.0-M7 through 10.1.51, and from 9.0.83 through 9.0.114. The issue allows an attacker to bypass certificate revocation checks when using an OCSP responder.

Defensive priority

High priority should be given to upgrading affected versions of Apache Tomcat Native and Apache Tomcat. Users should apply patches or upgrade to versions 1.3.5 or later of Tomcat Native, or to versions 11.0.18 or later, 10.1.52 or later, or 9.0.115 or later of Apache Tomcat.

Recommended defensive actions

• Upgrade Apache Tomcat Native to version 1.3.5 or later
• Upgrade Apache Tomcat to version 11.0.18 or later
• Upgrade Apache Tomcat to version 10.1.52 or later
• Upgrade Apache Tomcat to version 9.0.115 or later
• Review and update inventory of Apache Tomcat and Tomcat Native installations
• Monitor for potential exploitation attempts

Evidence notes

The CVE record and NVD detail provide comprehensive information about the vulnerability, including affected versions and recommended patches. Multiple vendor advisories and errata are available, indicating the importance of addressing this issue.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.