{"schemaVersion":3,"id":"CVE-2026-4484","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"The Masteriyo LMS plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 2.1.6. This is due to the plugin allowing a user to update the user role through the 'InstructorsController::prepare_object_for_database' function. This makes it possible for authenticated attackers, with Student-level access and above, to elevate their privileges to that of an administrator.","dates":{"published":"2026-03-26T01:25:33.967Z","modified":"2026-04-08T16:42:43.176Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.8,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"wordfence","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00506,"percentile":0.41972,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.15300000000000002,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00353},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00506,"percentile":0.41972}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00506,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00506,"percentile":0.41972}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-862","name":"Missing Authorization","description":"The product does not perform an authorization check when an actor attempts to access a resource or perform an action.","type":"weakness","status":"Incomplete","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/862.html"}],"affected":[{"vendor":"masteriyo","product":"masteriyo lms – online course builder for elearning, lms & education","name":"Masteriyo LMS – Online Course Builder for eLearning, LMS & Education","label":"masteriyo lms – online course builder for elearning, lms & education","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 2.1.6","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 2.1.6","eol":null,"hubHref":"/vendor/masteriyo/masteriyo_lms_-_online_course_builder_for_elearning_lms__education"},{"vendor":"wordpress","product":"learning-management-system","name":"Masteriyo LMS – LMS Course Builder, Quizzes & Certificates","label":"learning-management-system","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 2.1.6 (fixed in 2.1.7)","noFixRecorded":false,"fixedIn":"2.1.7"}],"versionsText":"≤ 2.1.6 (fixed in 2.1.7)","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/265be0af-66a4-4636-ab81-f8e2c5a1282e?source=cve","label":"www.wordfence.com/threat-intel/vulnerabilities/id/265be0af-66a4-4636-ab81-f8e2c5a1282e?source=cve","hostname":"www.wordfence.com","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/learning-management-system/tags/2.1.6/includes/RestApi/Controllers/Version1/InstructorsController.php#L305","label":"plugins.trac.wordpress.org/browser/…","hostname":"plugins.trac.wordpress.org","tags":[]},{"url":"https://plugins.trac.wordpress.org/changeset/3490792/learning-management-system/trunk/includes/RestApi/Controllers/Version1/InstructorsController.php","label":"plugins.trac.wordpress.org/changeset/…","hostname":"plugins.trac.wordpress.org","tags":[]},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/265be0af-66a4-4636-ab81-f8e2c5a1282e","label":"www.wordfence.com/threat-intel/vulnerabilities/id/265be0af-66a4-4636-ab81-f8e2c5a1282e","hostname":"www.wordfence.com","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-03-26T01:25:33.967Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-08T16:42:43.176Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":35,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T13:37:04.852Z","stale":false,"partial":false}}