Arbitrary File Execution in MasterStudy LMS Plugin by Webnus
CVE-2026-88843

Currently unrated

Key Information:

Vendor

WordPress
Status
Masterstudy Lms WordPress Plugin
Vendor
CVE Published:
24 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-88843?

The MasterStudy LMS WordPress Plugin prior to version 3.7.50 is vulnerable due to improper validation of display-style settings. This flaw permits users with Contributor roles or above to include and execute arbitrary local PHP files on the server. Notably, a similar path issue was addressed in an earlier release, yet this specific vulnerability remains unpatched, posing significant risks to site integrity and security.

Affected Version(s)

MasterStudy LMS WordPress Plugin 3.5.29 < 3.7.50

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-88843 - Proof of Concept

References

https://wpscan.com/vulnerability/fffc0d8c-256e-417d-b76c-...
exploitvdb-entrytechnical-description

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Karthik Ramakrishnan
WPScan
.