CVE-2026-82846 Details
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.
A stored cross-site scripting vulnerability has been identified in the Masteriyo LMS WordPress plugin, affecting versions prior to 3.4.0. The issue arises because the plugin fails to properly sanitize and escape certain course settings before displaying them on public pages. This flaw allows users with a course-author role to inject malicious scripts that are executed in the context of anyone viewing the course, including logged-in administrators.
Users are advised to update the Masteriyo LMS WordPress plugin to version 3.4.0 or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 5, 2026CISA-ADP
Assessed Sep 6, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://wpscan.com/vulnerability/0ee2052c-90a8-4b98-947a-adc55feb1de7/ | [email protected] | AdvisoryExploitRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| Masteriyo LMS | >= 1.18.0, <= 2.3.3 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 6, 2026 | CVE Modified | CISA-ADP |
| Sep 5, 2026 | New CVE Received | [email protected] |