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.
problem types: CWE-266 Incorrect Privilege Assignment
affected:
{
vendor: stylemix
product: MasterStudy LMS WordPress Plugin – for Online Courses and Education
versions:
version: *, status: affected, lessThanOrEqual: 3.3.1, versionType: semver
defaultStatus: unaffected
}
metrics:
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
baseScore: 9.8
baseSeverity: CRITICAL
]