Brysen Ackx

A closer look into the mvcRequestMatcher Spring vulnerability

On March 20th 2023, Spring Security Advisories published a blog post referencing an internally discovered vulnerability, CVE-2023-20860. No detailed information was disclosed, except that it was an access control issue concerning the use of `mvcMatchers`. Spring developers have remediated the issue, and a version update is advised. Since security is our main focus at Secure Code Warrior, we decided to take a deeper dive into this mvcRequestMatchers vulnerability and figure out where the core issue lies.