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Masterstudy Lms - Broken Access Control (CVE-2025-13766)

CVE-2025-13766

Vulnerability CVE-2025-13766 PLUGIN masterstudy-lms MEDIUM

The MasterStudy LMS WordPress Plugin – for Online Courses and Education plugin for WordPress is vulnerable to unauthorized modification and deletion of data due to a missing capability checks on multiple REST API endpoints in all versions up to, and including, 3.7.6. This makes it possible for authenticated attackers, with Subscriber-level access and above, to upload or delete arbitrary media files, delete or modify posts, and create/manage course templates

CVE-2025-13766

MEDIUM CVSS 5.4 Published 2026-01-06 Updated 2026-06-17
AI Risk Elevated (55/100) Active Exploit: No strong signal Published Exploit: No public exploit references Priority: P3 Priority
Severity Band MEDIUM
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Affected Components 1
Reference Links 2
AI Risk Engine Elevated (55/100)
Exploitability High
Active Exploitation No strong signal
Published Exploit Status No public exploit references

Threat Timeline

  1. 2026-01-06 CVE published and first recorded in the threat feed.
  2. 2026-06-17 Record updated with latest vulnerability metadata.
  3. 2026-04-09 AI technical context refreshed for mitigation and impact guidance.
  4. Now Monitoring for follow-up changes, linked references, and new related CVEs.

AI Context

Machine-generated threat intelligence

AI Updated 168 days ago

AI enriched 168 days ago (2026-04-09 07:38 UTC)

Technical Summary

The MasterStudy LMS WordPress Plugin – for Online Courses and Education plugin for WordPress is vulnerable to unauthorized modification and deletion of data due to a missing capability checks on multiple REST API endpoints in all versions up to, and including, 3.7.6. This makes it possible for authenticated attackers, with Subscriber-level access and above, to upload or delete arbitrary media files, delete or modify posts, and create/manage course templates

Potential Impact

Severity is MEDIUM (CVSS 5.4). Depending on deployment context, affected components may be exposed to unauthorized actions or data integrity risk.

Exploitability Assessment

Exploitability is assessed as High based on remote code execution potential.

Primary risk drivers: remote code execution potential

Mitigation Recommendations

Validate affected product versions, prioritize patching, and monitor references for vendor remediation guidance. If immediate patching is not possible, apply compensating controls and limit exposure of vulnerable surfaces.

Detection & Monitoring

Track authentication anomalies, unexpected file writes, and suspicious plugin API activity around affected components.

Business Impact Lens

Prioritize remediation where affected components process customer data, admin sessions, or Internet-exposed workflows.

Affected Products

Masterstudy Lms PLUGIN · masterstudy-lms Affected: >= 0, <= 3.7.6 Fixed version not specified

Related Vulnerabilities

Browse All Threats

Newest linked vulnerabilities to keep visitors exploring adjacent CVE coverage.

MasterStudy LMS - Security Vulnerability (CVE-2026-88844) CVE-2026-88844 Published 2026-09-18 New MasterStudy LMS - Security Vulnerability (CVE-2026-81340) CVE-2026-81340 Published 2026-09-18 New MasterStudy LMS - Security Vulnerability (CVE-2026-81199) CVE-2026-81199 Published 2026-09-02 MasterStudy LMS - Security Vulnerability (CVE-2026-81197) CVE-2026-81197 Published 2026-09-02 MasterStudy LMS - Security Vulnerability (CVE-2026-81195) CVE-2026-81195 Published 2026-09-02 MasterStudy LMS - Broken Access Control (CVE-2026-81194) CVE-2026-81194 Published 2026-09-02

References

What to do about this

Patch on your next cycle Worth fixing, but not ahead of other work.

Fix it

Update Masterstudy Lms to the latest available version.

Where the vendor has not published a fix yet, disable the plugin until they do.

Cannot update today? Request / payload inspection (WAF) in Hack Halt ProSecure blocks this class of attack before WordPress processes the request.

Inspect request parameters and bodies for injection, traversal and file-inclusion payloads, and refuse the request rather than logging it.

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Not sure if you are affected?

Scan your site to see whether it runs Masterstudy Lms, and at which version.

Free, no installation, no account. It reads what your site already publishes, then tells you which plugins carry known vulnerabilities and what to do about each one.

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Am I affected by this vulnerability?

You are affected if your site runs Masterstudy Lms.

How do I fix it?

Update Masterstudy Lms to the latest available version. Where the vendor has not yet published a fix, remove or disable the plugin until they do. Until you can update, Request / payload inspection (WAF) in Hack Halt ProSecure contains this class of attack at the request layer.

What can an attacker actually do?

This is a Broken Access Control flaw. An attacker who exploits it can reach actions or data that should have been restricted to someone else.

WordPress security that blocks attacks before they land.

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