CVE-2026-81338

MasterStudy LMS < 3.7.50 - Subscriber+ Stored HTML Injection via Course Discussions

Published Sep 23, 2026 CVSS 3.1 · 4.6 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Wordpress-extensions
Wordpress-extensions masterstudy Lms
Vendors & Products Wordpress-extensions
Wordpress-extensions masterstudy Lms
Type Values Removed Values Added
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.
Title MasterStudy LMS < 3.7.50 - Subscriber+ Stored HTML Injection via Course Discussions
Weaknesses CWE-345
References
Metrics cvssV3_1

{'score': 4.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Sep 23, 2026, 10:59 AM
Reserved
Aug 26, 2026, 6:07 PM
Status
Deferred
Published
Sep 23, 2026, 6:17 AM
Modified
Sep 23, 2026, 6:13 PM