What the vulnerability does
01Description
The LearnPress – WordPress LMS Plugin for Create and Sell Online Courses plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 4.3.9.1 via the 'userId' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to view the course enrollment progress and completion data belonging to any instructor or administrator account on the site. This IDOR does not apply when the target user is a regular subscriber, as the guard correctly blocks cross-subscriber access; exploitation is limited to cases where the victim user holds the LP_TEACHER_ROLE or administrator role.
Explanation of Vulnerability in Simple Terms
02Summary
LearnPress versions up to 4.3.9.1 contain an authorization flaw that allows authenticated users to access sensitive course data they should not be able to view. An attacker with a low-privilege account can read confidential information by exploiting improper access controls. No user interaction or code execution is involved. Update to a version newer than 4.3.9.1.
What an attacker can do
03Attacker Capabilities
Read sensitive course data and information they don't have permission to access.
Potential impact on your site
04Site Impact
Student or instructor accounts could view courses, grades, or materials belonging to other users.
Conditions required to exploit
05Prerequisites
Attacker must have a valid WordPress user account with low-level privileges.
Key dates
06Disclosure timeline
July 1, 2026
CVE published
July 1, 2026
Record updated
