{"id":"CVE-2024-2409","aliases":["EUVD-2024-27361","GHSA-62c6-x54m-9q5v"],"status":"published","title":"MasterStudy LMS \u003c= 3.3.1 - Unauthenticated Privilege Escalation via stm_lms_register AJAX Action","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.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00834,"percentile":0.57924,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-266"],"published":"2024-03-29T08:31:29Z","modified":"2026-06-17T07:24:28Z","products":[{"vendor":"stylemix","product":"masterstudy lms wordpress plugin – for online courses and education"},{"vendor":"stylemixthemes","product":"masterstudy_lms"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/94736152-b365-4b3a-a786-ed49f7d0fc7a?source=cve","tags":["x_transferred","Third Party Advisory"]},{"url":"https://docs.stylemixthemes.com/masterstudy-lms/changelog-free-version#id-3.3.2","tags":["x_transferred","Patch","Release Notes"]},{"url":"https://plugins.trac.wordpress.org/changeset/3059676/masterstudy-lms-learning-management-system","tags":["x_transferred","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-2409"},{"url":"https://github.com/advisories/GHSA-62c6-x54m-9q5v"}],"sources":{"cve":[{"id":"CVE-2024-2409","title":"MasterStudy LMS \u003c= 3.3.1 - Unauthenticated Privilege Escalation via stm_lms_register AJAX Action","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.","status":"published","published":"2024-03-29T08:31:29.816Z","modified":"2026-04-08T17:09:52.197Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-266"],"updated_at":"2026-11-02T14:34:09.540667Z"}],"euvd":[{"id":"EUVD-2024-27361","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.","status":"published","published":"2024-03-29T08:31:29Z","modified":"2026-04-08T17:09:52Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T19:24:49.011416Z"}],"ghsa":[{"id":"GHSA-62c6-x54m-9q5v","title":"The MasterStudy LMS plugin for WordPress is vulnerable to Privilege Escalation in all versions up...","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.","status":"published","published":"2024-03-29T09:30:43Z","modified":"2026-04-08T18:32:51Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-266"],"updated_at":"2026-11-02T15:07:13.380693Z"}],"nvd":[{"id":"CVE-2024-2409","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.","status":"published","published":"2024-03-29T09:15:07.733Z","modified":"2026-06-17T07:24:28.67Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-266"],"updated_at":"2026-11-02T14:09:44.124823Z"}]}}