CVE-2026-81338
MasterStudy LMS < 3.7.50 - Subscriber+ Stored HTML Injection via Course Discussions
- State
- Published
- Severity
- 4.6 Medium
- Published
- Sep 23, 2026
- Updated
- Sep 23, 2026
- Reserved
- Aug 26, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.6 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N | CISA-ADP |
Weaknesses
- CWE-345 Insufficient Verification of Data Authenticity
Affected Products
| Product | Versions |
|---|---|
MasterStudy LMS WordPress PluginUnknown |
|
References
- https://wpscan.com/vulnerability/e8494c71-fb0f-4ab9-a8b7-8db3745a2d9b/exploitvdb-entrytechnical-description
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