Masteriyo LMS – LMS Course Builder, Quizzes & Certificates <= 2.3.0 - Authenticated (Subscriber+) Stored Cross-Site Scripting

2026-07-21 00:00

Anonymous

Strategic Overview

Status

Patched in 2.3.1

Affected PluginMasteriyo LMS – LMS Course Builder, Quizzes & Certificates

Affected Version<= 2.3.0

CVSS6.4Medium

CVECVE-2026-59513

View all Masteriyo LMS – LMS Course Builder, Quizzes & Certificates vulnerabilities

Vulnerability Overview

The Masteriyo LMS – LMS Course Builder, Quizzes & Certificates plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.3.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Technical Analysis

REMEDIATION: Update to version 2.3.1, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2026-59513 https://www.wordfence.com/threat-intel/vulnerabilities/id/77c4515f-bab7-4bb9-bbf6-ca0ee557055d

CVSS Vector

6.4

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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