Masteriyo LMS – LMS Course Builder, Quizzes & Certificates <= 2.3.2 - Unauthenticated Arbitrary File Upload

9.8
Unrestricted Upload of File with Dangerous Type
CVE CVE-2026-73996
CVSS 9.8 (Critical)
Publicly Published August 18, 2026
Last Updated August 24, 2026
Researcher 20kilograma

Description

The Masteriyo LMS – LMS Course Builder, Quizzes & Certificates plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.3.2. This is due to missing file type validation. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server, which may make remote code execution possible.

Learn more about Arbitrary File Upload vulnerabilities and how to prevent them.

References

Share

Vulnerability Details for Masteriyo LMS – LMS Course Builder, Quizzes & Certificates

Software Type Plugin
Software Slug learning-management-system (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.3.3, or a newer patched version
Affected Version
  • <= 2.3.2
Patched Version
  • 2.3.3

Recent vulnerabilities in Masteriyo LMS – LMS Course Builder, Quizzes & Certificates

# Title CVE ID CVSS Researchers Date
1 Masteriyo LMS <= 3.4.1 - Authenticated (Subscriber+) Information Exposure CVE-2026-82850 4.3 Usama Arshad September 22, 2026
2 Masteriyo LMS <= 3.4.1 - Authenticated (Subscriber+) Insecure Direct Object Reference CVE-2026-82849 4.3 Karthik Ramakrishnan September 22, 2026
3 Masteriyo LMS – LMS Course Builder, Quizzes & Certificates 1.14.0 - 3.4.0 - Authenticated (Custom Role+) Insecure Direct Object Reference CVE-2026-82851 4.3 Karthik Ramakrishnan September 12, 2026
4 Masteriyo LMS – LMS Course Builder, Quizzes & Certificates < 3.4.1 - Authenticated (Custom Role+) Stored Cross-Site Scripting CVE-2026-82847 6.4 Karthik Ramakrishnan September 12, 2026
5 Masteriyo LMS – LMS Course Builder, Quizzes & Certificates <= 3.4.0 - Unauthenticated PHP Object Injection CVE-2026-62107 8.1 20kilograma September 11, 2026
6 Masteriyo LMS – LMS Course Builder, Quizzes & Certificates <= 3.4.0 - Missing Authorization CVE-2026-62132 4.3 MYUNGYONG LEE September 10, 2026
7 Masteriyo LMS <= 3.4.0 - Authenticated (Subscriber+) PHP Object Injection CVE-2026-82845 7.5 Karthik Ramakrishnan September 10, 2026
8 Masteriyo LMS – LMS Course Builder, Quizzes & Certificates 1.3.1 - 2.3.3 - Unauthenticated Information Exposure CVE-2026-82848 5.3 Karthik Ramakrishnan September 9, 2026
9 Masteriyo LMS <= 2.2.0 - Missing Authorization to Unauthenticated Arbitrary Course Progress Deletion CVE-2026-8279 5.3 Jamshed Yergashvoyev (CVE Guy) September 6, 2026
10 Masteriyo LMS – LMS Course Builder, Quizzes & Certificates 1.18.0 - 2.3.3 - Authenticated (Custom Role+) Stored Cross-Site Scripting CVE-2026-82846 6.4 Mutantgun September 5, 2026

Did you know Wordfence Intelligence provides free personal and commercial API access to our comprehensive WordPress vulnerability database, along with a free webhook integration to stay on top of the latest vulnerabilities added and updated in the database? Get started today!

Learn more

Want to get notified of the latest vulnerabilities that may affect your WordPress site?
Install Wordfence on your site today to get notified immediately if your site is affected by a vulnerability that has been added to our database.

Get Wordfence

The Wordfence Intelligence WordPress vulnerability database is completely free to access and query via API. Please review the documentation on how to access and consume the vulnerability data via API.

Documentation