CVE-2026-93446 Apache Tomcat - Possible TLS 1.3 connection failures

Severity: Low

Vendor: The Apache Software Foundation

Versions Affected:
Apache Tomcat 11.0.0-M21 to 11.0.26
Apache Tomcat 10.1.25 to 10.1.60
Apache Tomcat 9.0.90 to 9.0.122

Description:
Incomplete cleanup could cause TLS 1.3 connections to fail intermittently.

Mitigation:
Users of the affected versions should apply one of the following
mitigations:
- Upgrade to Apache Tomcat 11.0.27
- Upgrade to Apache Tomcat 10.1.61
- Upgrade to Apache Tomcat 9.0.123

Credit:
This issue was identified by:
- FHMTT (https://github.com/FHMTT)

History:
2026-10-20 Original advisory

References:
[1] https://tomcat.apache.org/security-11.html
[2] https://tomcat.apache.org/security-10.html
[3] https://tomcat.apache.org/security-9.html














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