The Title Experiments Free WordPress plugin before 9.0.1 does not sanitise and escape the id parameter before using it in a SQL statement via the wpex_titles AJAX action (available to unauthenticated users), leading to an unauthenticated SQL injection
The Title Experiments Free WordPress plugin before 9.0.1 does not sanitise and escape the id parameter before using it in a SQL statement via the wpex_titles AJAX action (available to unauthenticated users), leading to an unauthenticated SQL injection