CVE-2026-24734

HIGH EPSS 14.3%
Published Feb 17, 20264mo ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published Feb 17, 2026 4mo ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
14.3% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-20 Improper Input Validation Validation

Affected Products 51

VendorProductVersionRange
apachetomcat*≥9.0.83  –  <9.0.115
apachetomcat*≥10.1.1  –  <10.1.52
apachetomcat*≥11.0.1  –  <11.0.18
apachetomcat10.1.0any
apachetomcat10.1.0any
apachetomcat10.1.0any
apachetomcat10.1.0any
apachetomcat10.1.0any
apachetomcat10.1.0any
apachetomcat10.1.0any
apachetomcat10.1.0any
apachetomcat10.1.0any
apachetomcat10.1.0any
apachetomcat10.1.0any
apachetomcat10.1.0any
apachetomcat10.1.0any
apachetomcat10.1.0any
apachetomcat10.1.0any
apachetomcat10.1.0any
apachetomcat10.1.0any
apachetomcat10.1.0any
apachetomcat10.1.0any
apachetomcat10.1.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat11.0.0any
apachetomcat_native*≥1.3.0  –  <1.3.5
apachetomcat_native*≥2.0.0  –  <2.0.12

References 1

  • lists.apache.org https://lists.apache.org/thread/292dlmx3fz1888v6v16221kpozq56gml
    Issue TrackingMailing ListVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.