The Masteriyo LMS plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 2.1.6. This is due to the plugin allowing a user to update the user role through the 'InstructorsController::prepare_object_for_database' function. This makes it possible for authenticated attackers, with Student-level access and above, to elevate their privileges to that of an administrator.
CVE-2026-4484 is a high severity with CVSS 8.8 Privilege Escalation issue affecting the Plugin Masteriyo LMS – LMS Course Builder, Quizzes & Certificates. It affects Versions up to 2.1.6 and is fixed in 2.1.7.
Use the related hub and response guides to connect this CVE-2026-4484 report with patch validation, scanner checks, and site hardening work.
Open the grouped hub for related CVEs, affected ranges, severity mix, and patch coverage.
Check access, XML-RPC exposure, backup readiness, and monitoring after patching.
Use containment, evidence capture, remediation, and validation steps when exploit risk is high.
CVE-2026-4484 is tracked for the Plugin Masteriyo LMS – LMS Course Builder, Quizzes & Certificates as high severity with CVSS 8.8. The affected range is Versions up to 2.1.6. Update Masteriyo LMS – LMS Course Builder, Quizzes & Certificates to 2.1.7 or newer where that version is compatible with the site.
Search engines and operators need more than a title. This page exposes the identifier, affected range, patch evidence, and source coverage that make the vulnerability actionable.
This report has a CVE identifier, which makes it suitable for focused search and vulnerability triage workflows.
Affected version data gives operators a concrete comparison point against installed WordPress software.
A fixed version is present, so the page can answer update and remediation intent directly.
External references are available for source validation, advisory review, and incident notes.
Use these checks when converting this record into a patch ticket, incident note, or risk acceptance decision.
Inventory the installed Plugin package and compare its version with Versions up to 2.1.6.
Confirm Masteriyo LMS – LMS Course Builder, Quizzes & Certificates is updated to 2.1.7 or newer.
Review references and CVSS vector details for exploitability, authentication requirements, and exposure path.
After patching, re-run vulnerability monitoring and keep the related plugin or theme hub under review for follow-up CVEs.
| Software Type | Plugin |
|---|---|
| Software Slug |
learning-management-system
View on wordpress.org
|
| CVE | CVE-2026-4484 |
| Patched Versions |
2.1.7
|
| Affected Versions |
Versions up to 2.1.6
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Masteriyo - LMS <= 1.7.2 - Unauthenticated Privilege Escalation
Masteriyo LMS – LMS Course Builder, Quizzes & Certificates <= 2.2.0 - Authenticated (Subscriber+) Privilege Escalation
Masteriyo LMS – eLearning and Online Course Builder for WordPress <= 1.13.3 - Authenticated (Student+) Missing Authorization to Privilege Escalation
Masteriyo - LMS for WordPress <= 1.6.7 - Sensitive Information Exposure
Masteriyo - LMS <= 1.18.3 - Authenticated (Contributor+) Stored Cross-Site Scripting
Masteriyo LMS – eLearning and Online Course Builder for WordPress <= 1.13.3 - Authenticated (Student+) Stored Cross-Site Scripting via Ask a Question Functionality
Masteriyo LMS – LMS Course Builder, Quizzes & Certificates <= 2.1.8 - Missing Authorization
Masteriyo LMS – Online Course Builder for eLearning, LMS & Education <= 2.1.5 - Missing Authorization
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