Medium (5.3). EPSS 0.5% chance of exploitation in the next 30 days. Fixed in org.springframework.security:spring-security-core 6.4.4.
Spring Security 6.4.0 - 6.4.3 may not correctly locate method security annotations on parameterized types or methods. This may cause an authorization bypass.
You are not affected if you are not using @EnableMethodSecurity, or
you do not have method security annotations on parameterized types or methods, or all method security annotations are attached to target methods
Severity
CVSS 3.1
5.3 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS
0.5% chance of exploitation in the next 30 days; higher than 43% of CVEs (scores of 2026-10-31)