Unauthorized Access Vulnerability in MasterStudy LMS WordPress Plugin
CVE-2026-81199

5.3MEDIUM

Key Information:

Vendor

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-81199?

The MasterStudy LMS WordPress Plugin prior to version 3.7.46 is susceptible to an authorization bypass vulnerability. This flaw enables unauthenticated attackers to access sensitive student data, including course counts, points, certificates, and quiz and assignment totals of registered users. Without a proper authorization check in place, this vulnerability poses a significant risk to user privacy and data integrity.

Affected Version(s)

MasterStudy LMS WordPress Plugin 0 < 3.7.46

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-2026-81199 - Proof of Concept

References

https://wpscan.com/vulnerability/8dd53f85-5d1b-4e0b-a0f5-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Revanth Hari Narayana Matte
WPScan
.