PHP Object Injection Vulnerability in MasterStudy Learning Management System by MasterStudy
CVE-2026-118090

8.8HIGH

Key Information:

Vendor

WordPress
Status
Masterstudy Lms
Vendor
CVE Published:
30 October 2026

What is CVE-2026-118090?

A PHP Object Injection vulnerability exists in MasterStudy LMS versions up to 3.7.55, which could allow an attacker to manipulate the application's PHP objects. This could potentially lead to unauthorized access or arbitrary code execution, compromising the integrity of the learning management system. Administrators using affected versions should apply patches and updates immediately to ensure the security of their installations.

Affected Version(s)

MasterStudy LMS <= 3.7.55

References

https://patchstack.com/database/wordpress/plugin/masterst...
vdb-entry

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Siyang Wu | Patchstack Bug Bounty Program
.