Unauthenticated PHP Object Injection in Equadio

Executive Summary

This is an unauthenticated PHP Object Injection vulnerability in the Equadio WordPress theme versions up to 1.1.4. Attackers can exploit it without authentication to manipulate site data and execute harmful actions on the server.

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Detection Guidance

Detecting this vulnerability requires checking if the Equadio theme version 1.1.4 or below is installed. Inspect WordPress installations for the theme in the /wp-content/themes/ directory. Look for the presence of the Equadio theme folder. No specific commands are provided in the resources, but manual file inspection or using WordPress admin panel to check theme versions is recommended.

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Impact Analysis

It allows attackers to take control of your website, steal data, or perform malicious actions without needing to log in. The high CVSS score of 9.8 means it is critical and poses a severe risk to affected systems.

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Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, which may violate GDPR, HIPAA, and other regulations. Compliance risks include data exposure, legal penalties, and reputational damage due to insufficient security controls.

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Mitigation Strategies

Immediately apply the Patchstack mitigation rule to block attacks until an official patch is released. Update the Equadio theme to the latest version if available. If no update exists, consider removing the theme or seeking help from a hosting provider or developer. Disable the theme if not actively used.

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