Vulnerability details
CVE-2026-24734
Apache Tomcat Native, Apache Tomcat: OCSP revocation bypass
Official 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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.4High | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
| 7.4High | 3.1 | CVEProject cvelistV5 (CNA) (redhat-SADP) | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | 10.1.0-M7 ≤ v ≤ 10.1.51 | CVEProject cvelistV5 (CNA) |
| Apache Software Foundation | Apache Tomcat | 11.0.0-M1 ≤ v ≤ 11.0.17 | CVEProject cvelistV5 (CNA) |
| Apache Software Foundation | Apache Tomcat | 9.0.83 ≤ v ≤ 9.0.114 | CVEProject cvelistV5 (CNA) |
| Apache Software Foundation | Apache Tomcat Native | 1.1.23 ≤ v ≤ 1.1.34 | CVEProject cvelistV5 (CNA) |
| Apache Software Foundation | Apache Tomcat Native | 1.2.0 ≤ v ≤ 1.2.39 | CVEProject cvelistV5 (CNA) |
| Apache Software Foundation | Apache Tomcat Native | 1.3.0 ≤ v ≤ 1.3.4 | CVEProject cvelistV5 (CNA) |
| Apache Software Foundation | Apache Tomcat Native | 2.0.0 ≤ v ≤ 2.0.11 | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Enterprise Linux 10 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat JBoss Web Server 5 | All | CVEProject cvelistV5 (CNA) |
References and advisories
11- https://lists.apache.org/thread/292dlmx3fz1888v6v16221kpozq56gml vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-24734 vdb-entryx_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2440426 issue-trackingx_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24734.json x_sadp-csaf-vex
- https://access.redhat.com/errata/RHSA-2026:5611 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:19054 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:36790 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:26323 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:8334 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:6569 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:5612 vendor-advisoryx_refsource_REDHAT
Details
- Published
- 2026-02-17
- Last updated
- 2026-07-15
- State
- Published
- Assigner (CNA)
- apache
Exploit prediction (EPSS)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-20Improper Input Validation
- CWE-295Improper Certificate Validation