The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.46 does not perform an authorization check before returning a student's learning statistics, allowing unauthenticated attackers to disclose the course counts, points, certificates, quiz and assignment totals of any registered user.
https://wpscan.com/vulnerability/8dd53f85-5d1b-4e0b-a0f5-8c65d89cefb5/