Vulnerability · Published Sep 12, 2026 · Assigned by WPScan
CVE-2026-82847Masteriyo LMS < 3.4.1 - Instructor+ Stored XSS via Course Highlights
Medium 6.8
In plain English
A medium-severity cross-site scripting in Masteriyo LMS from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities).
Severity (CVSS 3.1)6.8Medium
Exploit odds (30 days)0.4%top 62.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
The Masteriyo LMS WordPress plugin before 3.4.1 does not sanitise and escape one of its course fields before outputting it back in the course editor, allowing users with the instructor role to perform Stored Cross-Site Scripting attacks against higher privileged users such as administrators.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | Masteriyo LMS | 0 – before 3.4.1 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
References
- https://wpscan.com/vulnerability/9cc4f7a7-e5b9-48fe-962b-f5d0753e6158/ exploit, vdb-entry, technical-description