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.
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.