The WP Courses LMS – Online Courses Builder, eLearning Courses, Courses Solution, Education Courses plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.2.29 via the 'resultID' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with custom-level access and above, to read any other user's quiz answers and scores by enumerating the incrementing resultID value via the wpcq_get_quiz_result AJAX action. The only access control on this endpoint is a nonce check (wpc_nonce) that is exposed to every logged-in user on the frontend, providing no meaningful authorization barrier.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 8
https://plugins.trac.wordpress.org/browser/wp-courses/tags/3.2.28/classes/WPCQ_…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/wp-courses/tags/3.2.28/classes/WPCQ_…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/wp-courses/tags/3.2.28/classes/WPCQ_…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/wp-courses/tags/3.2.29/classes/WPCQ_…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/wp-courses/tags/3.2.29/classes/WPCQ_…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/wp-courses/tags/3.2.29/classes/WPCQ_…
security@wordfence.com
https://plugins.trac.wordpress.org/changeset?reponame=&old=3660496%40wp-courses…
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/83936cda-e868-44f6-be…
security@wordfence.com