Unauthenticated PHP Object Injection in Booster for WooCommerce

Executive Summary

This is an unauthenticated PHP Object Injection vulnerability in the Booster for WooCommerce plugin affecting versions 8.4.0 and below. It allows attackers to inject malicious PHP objects into the application without authentication, potentially leading to remote code execution or other harmful server actions.

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Detection Guidance

Detecting this vulnerability requires checking if the Booster for WooCommerce plugin version 8.4.0 or below is installed. Inspect WordPress installations for the plugin and verify the version. No specific commands are provided in the context, but monitoring for unusual server activity or unauthorized data processing may indicate exploitation.

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Impact Analysis

An attacker could exploit this to execute arbitrary code on your server, steal sensitive data, or take control of your WordPress site. Since it requires no authentication, any unpatched site is at immediate risk of compromise.

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Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR (data protection) and HIPAA (health data privacy) requirements. Non-compliance may result in legal penalties, fines, or reputational damage.

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Mitigation Strategies

Immediately update the Booster for WooCommerce plugin to version 8.5.0 or later. Apply Patchstack's provided mitigation rule to block attacks until the update is applied. Ensure all WordPress installations are reviewed for this plugin and other vulnerable versions.

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