User Data Exposure in MasterStudy LMS Plugin for WordPress
CVE-2026-88844

2.7LOW

Key Information:

Vendor

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-88844?

The MasterStudy LMS WordPress Plugin prior to version 3.7.50 is susceptible to a vulnerability that fails to properly verify if a requesting user owns a particular course. This allows users with the Instructor role to gain unauthorized access to sensitive information, specifically revealing the names and email addresses of students enrolled in courses managed by other instructors. This issue raises significant concerns regarding user privacy and the potential for misuse of sensitive data.

Affected Version(s)

MasterStudy LMS WordPress Plugin 3.6.2 < 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-2026-88844 - Proof of Concept

References

https://wpscan.com/vulnerability/13b4f5c4-db4a-4bc2-b092-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
2.7
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Karthik Ramakrishnan
WPScan
.