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OpenAdvisories
Medium · 4.3 CVE-2026-81339 EUVD-2026-85029GHSA-fj8j-x93w-h29w

MasterStudy LMS < 3.7.50 - Subscriber+ Quiz Attempt Grade Disclosure via IDOR

Published Sep 23, 2026 · Updated Sep 23, 2026 · Assigned by WPScan

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.

Affected products

VendorProductAffectedFixed
— MasterStudy LMS WordPress Plugin < 3.7.50 3.7.50

References