Live › vulnerability › CVE-2026-53434
Go to dashboardApache Tomcat's tomcat-util silently ignores invalid Certificate Revocation Lists on FFM-based connectors, so revoked or invalid client certificates can be accepted. An attacker holding a certificate that should have been revoked can authenticate over TLS.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:45 UTC, 2h before NVD. All times on this page are UTC.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| org.apache.tomcat:tomcat-util | maven | >= 11.0.0-M1, <= 11.0.22 | 11.0.23 |
| org.apache.tomcat:tomcat-util | maven | >= 10.1.0-M7, <= 10.1.55 | 10.1.56 |
| org.apache.tomcat:tomcat-util | maven | >= 9.0.83, <= 9.0.118 | 9.0.119 |
| apache tomcat | vendor | >= 9.0.83, < 9.0.119 | 9.0.119 |
| apache tomcat | vendor | >= 10.1.0, < 10.1.56 | 10.1.56 |
| apache tomcat | vendor | >= 11.0.0, < 11.0.23 | 11.0.23 |
11.0.0-M1 to 11.0.22, 10.1.0-M7 to 10.1.55, 9.0.83 to 9.0.118)11.0.23, 10.1.56 or 9.0.119Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Detection of Error Condition Without Action vulnerability in Apache Tomcat when configuring Certificate Revocation List (CRLs) for a FFM based connector. If an FFM connector was configured with invalid CRLs, the invalid CRLs were ignored meaning invalid certificates could be accepted.
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.
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