When using Apache Shiro before 1.11.0 together with Spring Boot 2.6+, a specially crafted HTTP request may cause an authentication bypass. The authentication bypass occurs when Shiro and Spring Boot are using different pattern-matching techniques. Both Shiro and Spring Boot <2.6defaulttoAntstylepatternmatching.Mitigation:UpdatetoApacheShiro1.11.0,orsetthefollowingSpringBootconfigurationvalue:`spring.mvc.pathmatch.matching-strategy = ant_path_matcher`