An unauthenticated SQL Injection vulnerability in Good Layers LMS Plugin <= 2.1.4 exists due to the usage of “wp_ajax_nopriv” call in WordPress, which allows any unauthenticated user to get access to the function “gdlr_lms_cancel_booking” where POST Parameter “id” was sent straight into SQL query without sanitization.
View the template here CVE-2020-27481.yaml
References:
https://wpscan.com/vulnerability/652eaef8-5a3c-4a2d-ac60-b5414565c397