title: Authentication Bypass Vulnerability
description: Apache Shiro before 1.9.1, A RegexRequestMatcher can be misconfigured to be bypassed on some servlet containers. Applications using RegExPatternMatcher with `.` in the regular expression are possibly vulnerable to an authorization bypass.
problem types: CWE-863 Incorrect Authorization
affected:
{
product: Apache Shiro
vendor: Apache Software Foundation
versions:
status: affected, version: Before 1.9.1
}