CVE-2026-81338
MasterStudy LMS < 3.7.50 - Subscriber+ Stored HTML Injection via Course Discussions
MEDIUM 4.6EPSS 0.1%
The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not properly sanitise and restrict HTML in user-submitted content before storing it and rendering it to other users, allowing users with subscriber-level accounts and above to perform stored HTML injection, such as embedding iframes, that can be leveraged for phishing and content spoofing against other users viewing the content.
- Affected
- MasterStudy LMS WordPress Plugin
- CVSS v3.1 CNA
- 4.6 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N - EPSS
- 0.09% chance of exploitation in the next 30 days, 1st percentile
- Published
- 2026-09-23