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CVE-2026-24734— Apache Tomcat Native, Apache Tomcat: OCSP revocation bypass

Quick assessment

Affected
Apache Software Foundation Apache Tomcat Native
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Tomcat和Apache Tomcat Native都是美国阿帕奇（Apache）基金会的产品。Apache Tomcat是一款轻量级Web应用服务器。用于实现对Servlet和JavaServer Page（JSP）的支持。Apache Tomcat Native是一个本地组件库。 Apache Tomcat Native 1.3.4及之前版本、2.0.11及之前版本和Apache Tomcat 11.0.17及之前版本、10.1.51及之前版本、9.0.114及之前版本存在输入验证错误

AI Predicted 7.5 Difficulty: Moderate EPSS 0.52% · P42

Possible ATT&CK Techniques 1 AI

T1557.002 · ARP Cache Poisoning

Affected Version Matrix 8

VendorProduct Version RangeStatus
Apache Software Foundation Apache Tomcat 11.0.0-M1≤ 11.0.17 affected
10.1.0-M7≤ 10.1.51 affected
9.0.83≤ 9.0.114 affected
≤ 8.5.100 unaffected
Apache Software Foundation Apache Tomcat Native 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 affected
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I. Basic Information for CVE-2026-24734

Vulnerability Information
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Vulnerability Title
Apache Tomcat Native, Apache Tomcat: OCSP revocation bypass
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Tomcat和Apache Tomcat Native 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Tomcat和Apache Tomcat Native都是美国阿帕奇（Apache）基金会的产品。Apache Tomcat是一款轻量级Web应用服务器。用于实现对Servlet和JavaServer Page（JSP）的支持。Apache Tomcat Native是一个本地组件库。 Apache Tomcat Native 1.3.4及之前版本、2.0.11及之前版本和Apache Tomcat 11.0.17及之前版本、10.1.51及之前版本、9.0.114及之前版本存在输入验证错误
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Tomcat Native 1.1.23 ~ 1.1.34 -
Apache Software Foundation Apache Tomcat 11.0.0-M1 ~ 11.0.17 -

II. Public POCs for CVE-2026-24734

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III. Intelligence Information for CVE-2026-24734

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Mailing List Discussions for CVE-2026-24734 (1)

Same Patch Batch · Apache Software Foundation · 2026-02-17 · 5 CVEs total

CVE-2026-24733 Apache Tomcat: Security constraint bypass with HTTP/0.9
CVE-2025-66614 Apache Tomcat: Client certificate verification bypass due to virtual host mapping
CVE-2026-25087 Apache Arrow: Potential use-after-free when reading IPC file with pre-buffering
CVE-2026-25903 Apache NiFi: Missing Authorization of Restricted Permissions for Component Updates

IV. Related Vulnerabilities

Same product: Apache Tomcat Native
Same vendor: Apache Software Foundation
Same weakness: CWE-20

V. Comments for CVE-2026-24734

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