Unauthorized Data Modification in MasterStudy LMS Plugin for WordPress
CVE-2025-13766

5.4MEDIUM

Key Information:

Vendor

WordPress
Status
Masterstudy Lms WordPress Plugin – For Online Courses And Education
Vendor
CVE Published:
6 January 2026

What is CVE-2025-13766?

The MasterStudy LMS plugin, designed for online courses and education on WordPress, is susceptible to unauthorized data manipulation. Due to inadequate capability checks on several REST API endpoints, users with Subscriber-level permissions and higher can exploit this vulnerability. This allows them to upload or erase arbitrary media files, modify or remove posts, and manage course templates without proper authorization. Ensuring users have the correct permissions is crucial to mitigate these risks.

Affected Version(s)

MasterStudy LMS WordPress Plugin – for Online Courses and Education * <= 3.7.6

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/changeset/3422825/

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

thinnawarth mathuros
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