CVE-2026-81342: Unknown Masterstudy Lms WordPress Plugin

Medium severity, CVSS 4.7. EPSS: 0.3% chance of exploitation in the next 30 days.

The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.43 does not validate a redirect parameter supplied during user registration before using it, allowing unauthenticated attackers to redirect users to arbitrary external URLs.

Affected products

• Unknown Masterstudy Lms WordPress Plugin: before 3.7.43 (fixed in 3.7.43)

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