Vulnerability · Published Sep 5, 2026 · Assigned by WPScan
CVE-2026-82846Masteriyo LMS 1.18.0 - 2.3.3 - Instructor+ Stored XSS via Course Custom Fields
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 3.4.0 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | Masteriyo LMS | 1.18.0 – before 3.4.0 |
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/0ee2052c-90a8-4b98-947a-adc55feb1de7/ exploit, vdb-entry, technical-description