The MasterStudy LMS WordPress plugin before 2.7.6 does to validate some parameters given when registering a new account, allowing unauthenticated users to register as an admin
https://github.com/DappaNISM/CVE-2022-0441
https://github.com/kyukazamiqq/CVE-2022-0441
https://github.com/SDragon1205/cve-2022-0441
https://wpscan.com/vulnerability/173c2efe-ee9c-4539-852f-c242b4f728ed