CVE-2026-24734 Details
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.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2026-24734
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.11 Probability of exploitation activity being observed over the next 30 days (29th percentile)
CVSS score for CVE-2026-24734
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
7.5 High
Products affected by CVE-2026-24734
Tomcat 11.0.1
Tomcat 11.0.2
Tomcat 9.0.100
Tomcat 9.0.83
Tomcat 9.0.84
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Medium
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CVE-2026-24734 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 7,594 33.33%
CN 2,868 12.59%
DE 1,420 6.23%
IN 1,391 6.10%
KR 772 3.39%
BR 728 3.19%
SG 587 2.58%
GB 555 2.44%
JP 545 2.39%
FR 487 2.14%

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CVE-2026-24734 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 13,592 76.89%
Telecommunications 2,361 13.36%
Education 664 3.76%
Government/Politics 248 1.40%
Finance 176 1.00%
Business Services 145 0.82%
Manufacturing 95 0.54%
Retail 66 0.37%
Healthcare/Wellness 59 0.33%
Media/Entertainment 45 0.25%

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