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Message-ID: <e030f9c8-a072-41e7-a1b8-3d5902c1ea38@apache.org>
Date: Tue, 12 May 2026 16:24:35 +0100
From: Mark Thomas <markt@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-43512: Apache Tomcat: Digest authenticator will authenticate
any unknown user
Severity: moderate
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 8.5.0 through 8.5.100
- Apache Tomcat 7.0.0 through 7.0.109
- Apache Tomcat before 7.0.0 unknown
Description:
DEPRECATED: Authentication Bypass Issues vulnerability in digest
authentication 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 8.5.0
through 8.5.100, from before 7.0.0.
Older unsupported versions any also be affect
Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118
which fix the issue.
References:
https://lists.apache.org/thread/7x09x7o12solvclslw3sz0288xc8wx73
https://tomcat.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-43512
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