CVE-2024-2409
MasterStudy LMS <= 3.3.1 - Unauthenticated Privilege Escalation via stm_lms_register AJAX Action
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
The MasterStudy LMS plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.3.1. This is due to insufficient validation checks within the _register_user() function called by the 'wp_ajax_nopriv_stm_lms_register' AJAX action. This makes it possible for unauthenticated attackers to register a user with administrator-level privileges when MasterStudy LMS Pro is installed and the LMS Forms Editor add-on is enabled.
| CWE | CWE-266 |
| Vendor | stylemix |
| Product | masterstudy lms wordpress plugin – for online courses and education |
| Published | Mar 29, 2024 |
| Last Updated | Apr 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
stylemix / MasterStudy LMS WordPress Plugin – for Online Courses and Education
0 ≤ 3.3.1
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/94736152-b365-4b3a-a786-ed49f7d0fc7a?source=cve docs.stylemixthemes.com: https://docs.stylemixthemes.com/masterstudy-lms/changelog-free-version#id-3.3.2 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3059676/masterstudy-lms-learning-management-system
Credits
Hiroho Shimada