CVE-2025-59576

Vulnerability

Overview

The MasterStudy LMS plugin for WordPress, versions 3.6.20 and earlier, contains a missing authorization vulnerability [1]. This flaw stems from improperly configured access control security levels within the plugin's functions, allowing actions that should require higher privileges to be executed without proper checks [1].

Exploitation

An attacker can exploit this vulnerability without needing any special authentication or elevated privileges, as the missing authorization check means any unauthenticated or low-privileged user can trigger the vulnerable functionality [1]. The attack surface is broad, as the plugin is widely used on WordPress sites, and the vulnerability can be exploited remotely over the network [1].

Impact

Successful exploitation allows an attacker to perform actions that should be restricted to higher-privileged users, such as administrators [1]. This could lead to unauthorized modification of LMS settings, content, or user data, potentially compromising the integrity and confidentiality of the learning management system [1].

Mitigation

The vulnerability has been addressed in version 3.6.21 of the plugin [1]. Users are strongly advised to update immediately to protect their sites. For those unable to update, consulting with a hosting provider or web developer is recommended [1]. Patchstack users can enable auto-updates for vulnerable plugins [1].