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Message-ID: <fad565c9-c494-4ca9-abf0-8dd5c94380d3@apache.org>
Date: Tue, 12 May 2026 16:20:06 +0100
From: Mark Thomas <markt@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-41293: Apache Tomcat: HTTP/2 request headers not validated
Severity: low
Affected versions:
- Apache Tomcat 11.0.0-M1 through 11.0.21
- Apache Tomcat 10.1.0-M1 through 10.1.54
- Apache Tomcat 9.0.0.M1 through 9.0.117
- Apache Tomcat 10.0.0-M1 through 10.0.27
- Apache Tomcat 8.5.0 through 8.5.100
Description:
Improper Input Validation vulnerability in Apache Tomcat.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from
10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 10.0.0-M1
through 10.0.27.
Older, end of support versions may also be affected.
Users are recommended to upgrade to version [FIXED_VERSION], which fixes
the issue.
Credit:
Dawit Jeong (@dawitngoliath) (finder)
References:
https://lists.apache.org/thread/qwg0q16z7xkb2qrr853wdll5531mvl1r
https://tomcat.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-41293
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