Vulnerability Description
Improper Input Validation vulnerability in Apache Tomcat Native, Apache Tomcat. When using an OCSP responder, Tomcat Native (and Tomcat's FFM port of the Tomcat Native code) did not complete verification or freshness checks on the OCSP response which could allow certificate revocation to be bypassed. This issue affects Apache Tomcat Native: from 1.3.0 through 1.3.4, from 2.0.0 through 2.0.11; Apache Tomcat: from 11.0.0-M1 through 11.0.17, from 10.1.0-M7 through 10.1.51, from 9.0.83 through 9.0.114. The following versions were EOL at the time the CVE was created but are known to be affected: from 1.1.23 through 1.1.34, from 1.2.0 through 1.2.39. Older EOL versions are not affected. Apache Tomcat Native users are recommended to upgrade to versions 1.3.5 or later or 2.0.12 or later, which fix the issue. Apache Tomcat users are recommended to upgrade to versions 11.0.18 or later, 10.1.52 or later or 9.0.115 or later which fix the issue.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Tomcat | >= 9.0.83, < 9.0.115 |
| Apache | Tomcat Native | >= 1.3.0, < 1.3.5 |
Related Weaknesses (CWE)
References
- https://lists.apache.org/thread/292dlmx3fz1888v6v16221kpozq56gmlIssue TrackingMailing ListVendor Advisory
FAQ
What is CVE-2026-24734?
CVE-2026-24734 is a vulnerability with a CVSS score of 7.5 (HIGH). Improper Input Validation vulnerability in Apache Tomcat Native, Apache Tomcat. When using an OCSP responder, Tomcat Native (and Tomcat's FFM port of the Tomcat Native code) did not complete verifica...
How severe is CVE-2026-24734?
CVE-2026-24734 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-24734?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Tomcat, Apache Tomcat Native.