Membership Bypass Vulnerability in MasterStudy LMS WordPress Plugin
CVE-2026-88848

4.2MEDIUM

Key Information:

Vendor

WordPress
Status
Masterstudy Lms
Vendor
CVE Published:
25 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-88848?

The MasterStudy LMS plugin for WordPress, specifically versions 1.9 through 3.7.50, is susceptible to a serious vulnerability that allows unauthorized course enrollment. The flaw arises because the plugin fails to verify whether a member's requested course aligns with their membership plan. As a result, any user may enroll in premium courses that should be restricted based on their actual plan, potentially leading to unauthorized access to paid content and bypassing course limits.

Affected Version(s)

MasterStudy LMS 1.9 < 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-2026-88848 - Proof of Concept

References

https://wpscan.com/vulnerability/13258868-aeed-4664-8b38-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
4.2
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Arman Kumar
WPScan
.