CVE-2026-24734Apache Tomcat Native, Apache Tomcat: OCSP revocation bypass
- 7.4HighCVSS base score
- 0.59%Exploitation in 30 daysEPSS · top 51% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By apache
- 22 days later
· 22 days later
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
| redhat-SADPADP (enrichment) | 3.1 | High7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.59% · top 51% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.4.
Affected products
Apache Software Foundation · Apache Tomcat Native
- affected 1.1.23 – ≤ 1.1.34
- affected 1.2.0 – ≤ 1.2.39
- affected 1.3.0 – ≤ 1.3.4
- affected 2.0.0 – ≤ 2.0.11
Apache Software Foundation · Apache Tomcat
- affected 11.0.0-M1 – ≤ 11.0.17
- affected 10.1.0-M7 – ≤ 10.1.51
- affected 9.0.83 – ≤ 9.0.114
- unaffected ≤ 8.5.100
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenorg.apache.tomcat.embed:tomcat-embed-coreGHSA-mgp5-rv84-w37q (opens in a new tab)
- Mavenorg.apache.tomcat:tomcat-coyoteGHSA-mgp5-rv84-w37q (opens in a new tab)
- Mavenorg.apache.tomcat:tomcat-coyote-ffmGHSA-mgp5-rv84-w37q (opens in a new tab)
References
References11
- https://lists.apache.org/thread/292dlmx3fz1888v6v16221kpozq56gml (opens in a new tab)vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-24734 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2440426 (opens in a new tab)issue-trackingx_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24734.json (opens in a new tab)x_sadp-csaf-vex
- https://access.redhat.com/errata/RHSA-2026:5611 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:19054 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:36790 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:26323 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:8334 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:6569 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:5612 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-7833 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-mgp5-rv84-w37q (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-24734)Record last updated .