CVE-2026-19712
Masteriyo LMS < 2.3.3 - Instructor+ Stored XSS via Quiz Description
- State
- Published
- Severity
- 6.1 Medium
- Published
- Aug 16, 2026
- Updated
- Aug 17, 2026
- Reserved
- Aug 13, 2026
Description
The Masteriyo LMS WordPress plugin before 2.3.3 does not sanitise and escape a quiz field before outputting it back in a page, and grants its instructor role the ability to store unfiltered HTML, allowing such users to perform Stored Cross-Site Scripting attacks against any visitor of the affected page, including administrators. This affects default single-site installations. Sites running multisite, or defining DISALLOW_UNFILTERED_HTML, are not affected as the capability is not granted there.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.1 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | 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/08c31101-ee38-46e9-b451-abb1ed70079c/exploitvdb-entrytechnical-description
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.