Description
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.
References (3)
Core 3
Core References
Patch, Release Notes
https://docs.stylemixthemes.com/masterstudy-lms/changelog-free-version#id-3.3.2
Scores
CVSS v3
9.8
EPSS
0.0083
EPSS Percentile
52.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-266
Status
published
Products (2)
stylemix/MasterStudy LMS WordPress Plugin – for Online Courses and Education
< 3.3.1
stylemixthemes/masterstudy_lms
< 3.3.2
Published
Mar 29, 2024
Tracked Since
Feb 18, 2026