CVE-2026-81026: Unknown Masterstudy Lms WordPress Plugin

Medium severity, CVSS 4.8. EPSS: 0.2% chance of exploitation in the next 30 days.

The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.40 does not verify the amount, receiver, currency or status of a payment notification before marking the corresponding order completed, allowing unauthenticated users to complete full-price orders and gain access to paid content by paying only a token amount.

Affected products

• Unknown Masterstudy Lms WordPress Plugin: before 3.7.40 (fixed in 3.7.40)

Published 2026-08-29. Last modified 2026-08-31.