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OpenAdvisories
Medium · 4.8 CVE-2026-81026 EUVD-2026-68062GHSA-26xx-gp3p-fv9p

MasterStudy LMS < 3.7.40 - Unauthenticated Payment Bypass via PayPal IPN

Published Aug 29, 2026 · Updated Aug 30, 2026 · Assigned by WPScan

Description

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

VendorProductAffectedFixed
— MasterStudy LMS WordPress Plugin < 3.7.40 3.7.40

References