---
id: CVE-2026-82846
title: >-
  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 Scriptin…
summary: >-
  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 Scriptin…
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-79
published: '2026-09-05'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T19:09:21.310'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82846'
references:
  - url: 'https://wpscan.com/vulnerability/0ee2052c-90a8-4b98-947a-adc55feb1de7/'
    label: contact@wpscan.com
tags:
  - nvd
epss: 0.00431
epssPercentile: 0.34717
ingestedAt: '2026-09-06T05:50:39.343Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.