Medium

MasterStudy LMS WordPress Plugin – for Online Courses and Education <= 3.7.6 Missing Authorization to Authenticated (Subscriber+) Posts and Media Creation, Modification and Deletion

  • Disclosed: 05.01.2026
  • Updated: 11.10.2026 10:22

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

Affected software

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PlatformPackageVulnerable versionsFixed in
WordPress plugin MasterStudy LMS WordPress Plugin – for Online Courses and Education <= 3.7.6 3.7.7

References

CVSS score 5.4/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Weakness (CWE)
CWE-862
Platform
WordPress
Package
MasterStudy LMS WordPress Plugin – for Online Courses and Education
Disclosed
05.01.2026
Updated
11.10.2026 10:22

Sources and licenses

Wordfence Intelligence - 2719739a-90dc-470b-9270-8578e0cead59 - Wordfence Intelligence

Copyright 1999-2026 The MITRE Corporation

Copyright 2012-2026 Defiant Inc.

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Copyright 2012-2026 Defiant Inc.

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

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Wordfence Intelligence
Wordfence Intelligence - Defiant, Inc.
Copyright Defiant, Inc. All rights reserved except as granted below.
License grant, section 3.1 of the Wordfence Intelligence Terms and Conditions (January 26, 2026):

Subject to this Agreement, Company hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute the Service. Any copy you make for such purposes is authorized provided that you reproduce Company’s copyright designation, this license, and the license of any disclosed Company licensor in any such copy.

Full applicable Agreement: https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/

Vulnerability history: MasterStudy LMS WordPress Plugin – for Online Courses and Education

All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (54) in the archive
Total entries
54
First → latest
02.2022 10.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 6
  • High 5
  • Medium 43

Disclosures per year

  1. 2022: 1
  2. 2023: 5
  3. 2024: 10
  4. 2025: 7
  5. 2026: 31
Severity:
  1. High · 7.5 CVE-2026-88843 >= 3.5.29, <= 3.7.49 3.7.50
  2. MasterStudy LMS WordPress Plugin – for Online Courses and Education <= 3.7.6 Missing Authorization to Authenticated (Subscriber+) Posts and Media Creation, Modification and Deletion this entry
    Medium · 5.4 CVE-2025-13766 <= 3.7.6 3.7.7
  3. High · 7.3 CVE-2023-4278 <= 3.0.17 3.0.18
  4. Critical · 9.8 CVE-2022-0441 <= 2.7.5 2.7.6

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