Improper Ownership Verification in MasterStudy LMS Plugin by WordPress
CVE-2026-81198

3.8LOW

Key Information:

Vendor

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-81198?

The MasterStudy LMS Plugin for WordPress prior to version 3.7.46 contains a vulnerability that allows authenticated users with instructor privileges to manipulate curriculum objects. This flaw occurs due to inadequate verification of ownership, enabling these users to delete or alter course sections and materials associated with courses owned by other instructors, potentially leading to unauthorized content modification and loss of instructional 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-2026-81198 - Proof of Concept

References

https://wpscan.com/vulnerability/424b3a47-78fe-4c95-a317-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
3.8
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
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

Revanth Hari Narayana Matte
WPScan
.