CVE-2026-82846
Masteriyo LMS 1.18.0 - 2.3.3 - Instructor+ Stored XSS via Course Custom Fields
- State
- Published
- Severity
- 6.8 Medium
- Published
- Sep 5, 2026
- Updated
- Sep 6, 2026
- Reserved
- Aug 31, 2026
Description
The Masteriyo LMS WordPress plugin before 3.4.0 does not sanitise and escape some course settings before outputting them in a page available to all visitors, allowing users with a course-author role to perform Stored Cross-Site Scripting attacks that run in the session of anyone viewing the course, including a logged-in administrator.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.8 Medium | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
Masteriyo LMSUnknown |
|
References
- https://wpscan.com/vulnerability/0ee2052c-90a8-4b98-947a-adc55feb1de7/exploitvdb-entrytechnical-description
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