Unauthenticated Role Escalation in MemberGlut WordPress Plugin

Executive Summary

This vulnerability in the MemberGlut WordPress plugin before version 1.1.5 allows unauthenticated users to register an account with an arbitrary role, including administrator, due to improper role validation during front-end registration. This leads to full site compromise as attackers gain full administrative access.

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Detection Guidance

Check if the MemberGlut WordPress plugin version is below 1.1.5 by inspecting the plugin files or WordPress admin panel. Look for unauthorized administrator accounts in the Users section of WordPress.

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Impact Analysis

An attacker could exploit this to gain complete control over your WordPress site, allowing them to modify content, install malicious plugins, steal data, or take the site offline. Since no authentication is required, the risk is high for any site using an unpatched version.

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Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating GDPR's data protection requirements and HIPAA's security rules for protected health information. Non-compliance may result in legal penalties, fines, and reputational damage.

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Mitigation Strategies

Update the MemberGlut plugin to version 1.1.5 or later immediately. Review all user accounts for unauthorized administrator roles and remove any suspicious accounts.

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