CVE-2025-22223: Spring Security Vulnerable to Authorization Bypass via Security Annotations

The vulnerability stems from how method security annotations were discovered in inheritance hierarchies. The pre-patch implementation in findClosestMethodAnnotations used getDeclaredMethod() which doesn't account for generic type parameters when resolving overridden methods. This caused security annotations on parameterized superclass/interface methods to be missed, allowing unauthorized access. The commit introduced a new findMethod() helper with ResolvableType checks to properly handle generics, confirming the original implementation was vulnerable.