The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.7.1 via the 'attempt_delete' function due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Instructor-level access and above, to delete arbitrary quiz attempts.

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-5438
• https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Quiz.php#L1806
• https://plugins.trac.wordpress.org/changeset/3098465
• https://www.wordfence.com/threat-intel/vulnerabilities/id/00ec14d4-d97b-40b1-b61b-05e911f49bb0?source=cve