CVE-2026-65637: Apache Tomcat: HTTP/2 no-authority bypass of strict SNI validation - CVE-2026-32990 fix incomplete
Published Aug 25, 2026
·Updated
Improper Input Validation vulnerability in Apache Tomcat due to incomplete fix for CVE-2026-32990.
This issue affects Apache Tomcat: from 11.0.20 through 11.0.24, from 10.1.53 through 10.1.57, from 9.0.115 through 9.0.120.
Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.
Affected Software
3 affected components
Apache Tomcat>=11.0.20<=11.0.24
Apache Tomcat>=10.1.53<=10.1.57
Apache Tomcat>=9.0.115<=9.0.120
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Apache Tomcatto a version that resolves this vulnerability.Fixed in 11.0.25 - Upgrade
Upgrade
Apache Tomcatto a version that resolves this vulnerability.Fixed in 10.1.58 - Upgrade
Upgrade
Apache Tomcatto a version that resolves this vulnerability.Fixed in 9.0.121
Event History
Aug 25, 2026
CVE Published
via MITRE·09:49 PM
Data Sourced
via MITRE·09:49 PM
DescriptionWeakness
Data Sourced
via NVD·10:17 PM
DescriptionWeakness