What the vulnerability does
01Description
The LearnPress – WordPress LMS Plugin plugin for WordPress is vulnerable to unauthorized email notification triggering due to missing capability checks on all 10 functions in the SendEmailAjax class in all versions up to, and including, 4.3.2.8. The AbstractAjax::catch_lp_ajax() dispatcher verifies a wp_rest nonce but performs no current_user_can() check before dispatching to handler functions. The wp_rest nonce is embedded in the frontend JavaScript for all authenticated users. This makes it possible for authenticated attackers, with Subscriber-level access and above, to trigger arbitrary email notifications to admins, instructors, and users, enabling email flooding, social engineering, and impersonation of admin decisions regarding instructor requests.
Explanation of Vulnerability in Simple Terms
02Summary
LearnPress versions up to 4.3.2.8 lack proper authorization checks, allowing authenticated users to modify course or lesson content they should not have access to. An attacker with a low-privilege account (such as a student) can change data belonging to other users or courses. The vulnerability requires an active WordPress account but no special interaction from victims.
What an attacker can do
03Attacker Capabilities
Modify course or lesson data belonging to other users or courses without proper permission.
Potential impact on your site
04Site Impact
Students or low-privilege users could alter course content, lesson settings, or other users' course data, compromising course integrity.
Conditions required to exploit
05Prerequisites
Attacker must have a valid WordPress user account with at least subscriber-level access.
Key dates
06Disclosure timeline
March 12, 2026
CVE published
April 8, 2026
Record updated
