[SECURITY] CVE-2026-32990 Apache Tomcat - The fix for CVE-2025-66614 is incomplete

Mark Thomas <[email protected]> Thu, 9 Apr 2026 20:03:26 +0100
Newsgroups gmane.comp.apache.incubator.ranger.devel,gmane.comp.jakarta.tomcat.user,gmane.comp.apache.maven.announce
Message-ID <234cf374-2d24-450c-8953-205c8f00e68b__45469.7431808867$1775761695$gmane$org@apache.org>
CVE-2026-32990 Apache Tomcat - The fix for CVE-2025-66614 is incomplete

Severity: Moderate

Vendor: The Apache Software Foundation

Versions Affected:
Apache Tomcat 11.0.15 to 11.0.19
Apache Tomcat 10.1.50 to 10.1.52
Apache Tomcat 9.0.113 to 9.0.115

Description:
The validation of SNI name and host name did not take account of 
possible differences in case allowing the strict SNI checks to be bypassed.

Mitigation:
Users of the affected versions should apply one of the following
mitigations:
- Upgrade to Apache Tomcat 11.0.20 or later
- Upgrade to Apache Tomcat 10.1.53 or later
- Upgrade to Apache Tomcat 9.0.116 or later

Credit:
This issue was identified by zhengg

History:
2026-04-09 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