CVE-2026-88848: Unknown Masterstudy Lms

Medium severity, CVSS 4.2. EPSS: 0.1% chance of exploitation in the next 30 days.

The MasterStudy LMS WordPress plugin from 1.9 before 3.7.50 does not verify that a course a member asks to enrol in is covered by their membership plan, nor that the plan identifier submitted with the request is one they actually hold, allowing any member to enrol themselves into restricted paid courses outside their plan and beyond the number of courses it entitles them to.

Affected products

• Unknown Masterstudy Lms: from 1.9, before 3.7.50 (fixed in 3.7.50)

Published 2026-09-25. Last modified 2026-09-25.