CVE-2026-5060

MasterStudy LMS WordPress Plugin – for Online Courses and Education <= 3.7.14 - Insecure Direct Object Reference to Authenticated (Instructor+) Arbitrary Attachment Deletion

6.5 Medium

The MasterStudy LMS WordPress Plugin – for Online Courses and Education plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.7.14. This is due to the stm_lms_delete_cover() function lacking ownership validation on the file_id parameter before passing it to wp_delete_attachment(). This makes it possible for authenticated attackers, with Instructor-level access and above, to delete arbitrary attachments belonging to any user by enumerating sequential attachment IDs.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: None

Exploit likelihood

0.39%Up 0.2 points since Jul 30, 2026

What each source reports

CVE List Score used 6.5

MasterStudy LMS WordPress Plugin – for Online Courses and Education <= 3.7.14 - Insecure Direct Object Reference to Authenticated (Instructor+) Arbitrary Attachment Deletion

Record: CVE-2026-5060
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-639
Updated: 2026-11-02

EUVDEUVD-2026-50271 6.5

Record: EUVD-2026-50271
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-3wr4-2wwf-jjxw 6.5

The MasterStudy LMS WordPress Plugin – for Online Courses and Education plugin for WordPress is...

Record: GHSA-3wr4-2wwf-jjxw
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-639
Updated: 2026-11-02

NVD 6.5

Record: CVE-2026-5060
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-639
Updated: 2026-11-02

Affected products

stylemix masterstudy lms wordpress plugin – for online courses and education

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-5060 is a medium vulnerability (CVSS 6.5) in Stylemix Masterstudy Lms Wordpress Plugin – For Online Courses And Education, published July 29, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.39%, the 33rd percentile. No source names a fixed version.