{"id":"CVE-2026-81339","aliases":["EUVD-2026-85029","GHSA-fj8j-x93w-h29w"],"status":"published","title":"MasterStudy LMS \u003c 3.7.50 - Subscriber+ Quiz Attempt Grade Disclosure via IDOR","description":"The MasterStudy LMS WordPress Plugin  WordPress plugin before 3.7.50 does not perform a per-object ownership check when returning a quiz attempt result, allowing any authenticated user with a minimal (subscriber) role to read other students' quiz grades, pass/fail status and attempt timestamps by referencing an attempt identifier belonging to another user.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-12","score":0.0027,"percentile":0.19473,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-639"],"published":"2026-09-23T06:00:15Z","modified":"2026-09-23T18:13:31Z","products":[{"vendor":"unknown","product":"masterstudy lms wordpress plugin"}],"references":[{"url":"https://wpscan.com/vulnerability/f027d0b1-5d8a-4e80-adb3-bbf97dc53306/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-81339"},{"url":"https://wpscan.com/vulnerability/f027d0b1-5d8a-4e80-adb3-bbf97dc53306"},{"url":"https://github.com/advisories/GHSA-fj8j-x93w-h29w"}],"sources":{"cve":[{"id":"CVE-2026-81339","title":"MasterStudy LMS \u003c 3.7.50 - Subscriber+ Quiz Attempt Grade Disclosure via IDOR","description":"The MasterStudy LMS WordPress Plugin  WordPress plugin before 3.7.50 does not perform a per-object ownership check when returning a quiz attempt result, allowing any authenticated user with a minimal (subscriber) role to read other students' quiz grades, pass/fail status and attempt timestamps by referencing an attempt identifier belonging to another user.","status":"published","published":"2026-09-23T06:00:15.932Z","modified":"2026-09-23T10:59:07.298Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T13:36:18.075535Z"}],"euvd":[{"id":"EUVD-2026-85029","description":"The MasterStudy LMS WordPress Plugin  WordPress plugin before 3.7.50 does not perform a per-object ownership check when returning a quiz attempt result, allowing any authenticated user with a minimal (subscriber) role to read other students' quiz grades, pass/fail status and attempt timestamps by referencing an attempt identifier belonging to another user.","status":"published","published":"2026-09-23T06:00:15Z","modified":"2026-09-23T10:59:07Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T17:28:01.283316Z"}],"ghsa":[{"id":"GHSA-fj8j-x93w-h29w","title":"The MasterStudy LMS WordPress Plugin  WordPress plugin before 3.7.50 does not perform a per...","description":"The MasterStudy LMS WordPress Plugin  WordPress plugin before 3.7.50 does not perform a per-object ownership check when returning a quiz attempt result, allowing any authenticated user with a minimal (subscriber) role to read other students' quiz grades, pass/fail status and attempt timestamps by referencing an attempt identifier belonging to another user.","status":"published","published":"2026-09-23T06:31:03Z","modified":"2026-09-23T12:32:13Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T15:12:20.494129Z"}],"nvd":[{"id":"CVE-2026-81339","description":"The MasterStudy LMS WordPress Plugin  WordPress plugin before 3.7.50 does not perform a per-object ownership check when returning a quiz attempt result, allowing any authenticated user with a minimal (subscriber) role to read other students' quiz grades, pass/fail status and attempt timestamps by referencing an attempt identifier belonging to another user.","status":"published","published":"2026-09-23T06:17:02.263Z","modified":"2026-09-23T18:13:31.21Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:12:50.703874Z"}]}}