CVE-2026-81339 – The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not perform a pe

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.