CVE-2021-24583

The Timetable and Event Schedule WordPress plugin before 2.4.2 does not have proper access control when deleting a timeslot, allowing any user with the edit_posts capability (contributor+) to delete arbitrary timeslot from any events. Furthermore, no CSRF check is in place as well, allowing such attack to be performed via CSRF against a logged in with such capability

Source: CVE-2021-24583