Tutor LMS WordPress plugin vulnerabilities

The Tutor LMS WordPress plugin before 4.1.1 does not verify that the posts named in its course content ordering requests belong to a course the requester manages. This allows users with instructor-level access to reassign the parent of any post on the site, taking other instructors' course content into their own courses and making arbitrary published content unreachable.

The Tutor LMS WordPress plugin before 4.0.0 does not properly verify user access to the course a Q&A thread belongs to before returning or writing to that thread. Authenticated users with subscriber-level access and above who can access any single course can read Q&A threads of other courses and inject replies.

The Tutor LMS WordPress plugin before 2.2.1 does not implement adequate permission checks for REST API endpoints, allowing unauthenticated attackers to access information from Lessons that should not be publicly available.