The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Insecure Direct Object Reference to Arbitrary Course Deletion in versions up to, and including, 2.7.0 via the 'tutor_course_delete' function due to missing validation on a user controlled key. This can allow authenticated attackers, with Instructor-level permissions and above, to delete any course.
https://plugins.trac.wordpress.org/changeset/3086489/
https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Course_List.php#L357