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CVE-2026-53434— Apache Tomcat: Invalid CRL configuration doesn't trigger failure for FFM Connector

Quick assessment

Affected
Apache Software Foundation Apache Tomcat
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 Software Foundation Apache Tomcat是Apache Software Foundation基金会的应用服务器。 Apache Tomcat存在异常处理不当漏洞，该漏洞源于在配置基于FFM的连接器的CRLs时存在错误条件未处理问题。以下版本受到影响：11.0.0-M1至11.0.22版本、10.1.0-M7至10.1.55版本、9.0.83至9.0.118版本。

AI Predicted 5.5 Difficulty: Theoretical EPSS 0.60% · P46

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

VendorProduct Version RangeStatus
Apache Software Foundation Apache Tomcat 11.0.0-M1≤ 11.0.22 affected
10.1.0-M7≤ 10.1.55 affected
9.0.83≤ 9.0.118 affected
≤ 9.0.82 unaffected
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I. Basic Information for CVE-2026-53434

Vulnerability Information
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Vulnerability Title
Apache Tomcat: Invalid CRL configuration doesn't trigger failure for FFM Connector
Source: CVE Program / CVE List V5
Vulnerability Description
Detection of Error Condition Without Action vulnerability in Apache Tomcat when configuring CRLs for a FFM based connector. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M7 through 10.1.55, from 9.0.83 through 9.0.118. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
未有动作错误条件的检测
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Tomcat 异常处理不当漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Software Foundation Apache Tomcat是Apache Software Foundation基金会的应用服务器。 Apache Tomcat存在异常处理不当漏洞，该漏洞源于在配置基于FFM的连接器的CRLs时存在错误条件未处理问题。以下版本受到影响：11.0.0-M1至11.0.22版本、10.1.0-M7至10.1.55版本、9.0.83至9.0.118版本。
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 11.0.0-M1 ~ 11.0.22 -

II. Public POCs for CVE-2026-53434

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III. Intelligence Information for CVE-2026-53434

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Mailing List Discussions for CVE-2026-53434 (1)

Same Patch Batch · Apache Software Foundation · 2026-06-29 · 7 CVEs total

CVE-2026-55957 Apache Tomcat: Authentication bypass with JNDIRealm and GSSAPI authenticated bind
CVE-2026-55956 Apache Tomcat: Security constraints for default servlet ignored method
CVE-2026-55955 Apache Tomcat: EncryptInterceptor not protected against replay attacks
CVE-2026-55276 Apache Tomcat: Logged effective web.xml is incomplete
CVE-2026-53404 Apache Tomcat: Bad ornext processing in RewriteValve
CVE-2026-50229 Apache Tomcat: XSS in number guess example

IV. Related Vulnerabilities

Same product: Apache Tomcat
Same vendor: Apache Software Foundation
Same weakness: CWE-390

V. Comments for CVE-2026-53434

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