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Message-ID: <8518a778-4999-4dc1-b720-c2acd892dd34@apache.org>
Date: Tue, 25 Aug 2026 22:46:35 +0100
From: Mark Thomas <markt@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-65182: Apache Tomcat: Bypass longest prefix security
constraint
Severity: important
Affected versions:
- Apache Tomcat 11.0.0-M1 through 11.0.24
- Apache Tomcat 10.1.0-M1 through 10.1.57
- Apache Tomcat 9.0.0.M1 through 9.0.120
- 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:
Improper Access Control, Incorrect Authorization vulnerability in Apache
Tomcat leads to security constraint bypass if a constraint for a longer
path is specified before a more restrictive constraint for a shorter
sub-path.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from
10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120, from 8.5.0
through 8.5.100, from 7.0.0 through 7.0.109.
Users are recommended to upgrade to version 11.0.25, 10.1.58, 9.0.121,
which fixes the issue.
Credit:
4ra1n, pyn3rd and unam4 (finder)
References:
https://lists.apache.org/thread/joosxvzc9b49ttj8lj0jw9mqt0ml767m
https://tomcat.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-65182
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