We have released Spring Security 5.5.1, 5.4.7, 5.3.10 and 5.2.11 to address the following CVE report:

• CVE-2021-22119: Denial-of-Service attack with spring-security-oauth2-client

Please review the information in the CVE report and upgrade immediately.

Spring Boot users should upgrade to 2.5.2 or 2.4.8.