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Vulnerabilities and Security Researches

MasterStudy LMS WordPress Plugin – for Online Courses and Education, CVE-2026-81340

CVE, Research URL

CVE-2026-81340

Published on
Sep 18, 2026
Research Description
The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not perform per-object ownership or capability checks when updating orders through its REST API, allowing users with the Instructor role to modify any order on the site, granting free course enrolment, revoking other users' paid enrolments, and tampering with order notes.
Affected versions
max 3.7.50.
Status
vulnerable