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Message-ID: <b5443c21-9bf9-4d36-8f2e-e5ad039bffe6@apache.org>
Date: Tue, 25 Aug 2026 22:50:28 +0100
From: Mark Thomas <markt@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-65637: Apache Tomcat: HTTP/2 no-authority bypass of strict
SNI validation - CVE-2026-32990 fix incomplete
Severity: moderate
Affected versions:
- Apache Tomcat 11.0.20 through 11.0.24
- Apache Tomcat 10.1.53 through 10.1.57
- Apache Tomcat 9.0.115 through 9.0.120
Description:
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.
Credit:
Parag Ambildhuke (https://github.com/paragxa) (finder)
References:
https://lists.apache.org/thread/djog953z1ohsyt25bdvhfzbmsy22vgcj
https://tomcat.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-65637
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