CVE-2026-24734
published 2026-02-17CVE-2026-24734: Improper Input Validation vulnerability in Apache Tomcat Native, Apache Tomcat. When using an OCSP responder, Tomcat Native (and Tomcat's FFM port of the…
PriorityP347high7.5CVSS 3.1
AVNACLPRNUINSUCNIHAN
EPSS
0.50%
39.4th percentile
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.
Affected
61 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
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CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
osv7.5HIGH
vendor_debian7.5HIGH
vendor_redhat7.5HIGH
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GHSA
Apache Tomcat has an Improper Input Validation vulnerability
ghsa·2026-02-17
CVE-2026-24734 [HIGH] CWE-20 Apache Tomcat has an Improper Input Validation vulnerability
Apache Tomcat has an Improper Input Validation vulnerability
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
OSV
CVE-2026-24734: Improper Input Validation vulnerability in Apache Tomcat Native, Apache Tomcat
osv·2026-02-17·CVSS 7.5
CVE-2026-24734 [HIGH] CVE-2026-24734: Improper Input Validation vulnerability in Apache Tomcat Native, Apache Tomcat
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
OSV
Apache Tomcat has an Improper Input Validation vulnerability
osv·2026-02-17
CVE-2026-24734 [HIGH] Apache Tomcat has an Improper Input Validation vulnerability
Apache Tomcat has an Improper Input Validation vulnerability
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
Red Hat
tomcat: Apache Tomcat: Certificate revocation bypass due to improper OCSP response validation
vendor_redhat·2026-02-17·CVSS 7.5
CVE-2026-24734 [HIGH] CWE-295 tomcat: Apache Tomcat: Certificate revocation bypass due to improper OCSP response validation
tomcat: Apache Tomcat: Certificate revocation bypass due to improper OCSP response validation
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 N
Debian
CVE-2026-24734: tomcat10 - Improper Input Validation vulnerability in Apache Tomcat Native, Apache Tomcat. ...
vendor_debian·2026·CVSS 7.5
CVE-2026-24734 [HIGH] CVE-2026-24734: tomcat10 - Improper Input Validation vulnerability in Apache Tomcat Native, Apache Tomcat. ...
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
No detection rules found.
No public exploits indexed.
Wiz
CVE-2026-24734 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 7.5
CVE-2026-24734 [HIGH] CVE-2026-24734 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2026-24734 :
Java vulnerability analysis and mitigation
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 recommende
Bugzilla
CVE-2026-24734 tomcat: Apache Tomcat: Certificate revocation bypass due to improper OCSP response validation
bugzilla·2026-02-17·CVSS 7.5
CVE-2026-24734 [HIGH] CVE-2026-24734 tomcat: Apache Tomcat: Certificate revocation bypass due to improper OCSP response validation
CVE-2026-24734 tomcat: Apache Tomcat: Certificate revocation bypass due to improper OCSP response validation
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 affect
https://lists.apache.org/thread/292dlmx3fz1888v6v16221kpozq56gmlhttps://access.redhat.com/errata/RHSA-2026:19054https://access.redhat.com/errata/RHSA-2026:26323https://access.redhat.com/errata/RHSA-2026:36790https://access.redhat.com/errata/RHSA-2026:5611https://access.redhat.com/errata/RHSA-2026:5612https://access.redhat.com/errata/RHSA-2026:6569https://access.redhat.com/errata/RHSA-2026:8334https://access.redhat.com/security/cve/CVE-2026-24734https://bugzilla.redhat.com/show_bug.cgi?id=2440426https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24734.json
2026-02-17
Published