Good Layers LMS Plugin <= 2.1.4 - SQL Injection

An unauthenticated SQL Injection vulnerability in Good Layers LMS Plugin = 2.1.4 exists due to the usage of "wpajaxnopriv" call in WordPress, which allows any unauthenticated user to get access to the function "gdlrlmscancelbooking" where POST Parameter "id" was sent straight into SQL query witho...