Unauthenticated Script Import in JCH Optimize WordPress Plugin

Executive Summary

This vulnerability affects the JCH Optimize WordPress plugin versions before 6.0.1. It allows authenticated users with Subscriber-level access or higher to exploit an AJAX action that lacks proper capability checks. Attackers can override the getcacheinfo task, import arbitrary plugin settings, and inject malicious scripts that execute when any visitor or administrator views the site.

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Detection Guidance

Check if the JCH Optimize WordPress plugin version is below 6.0.1. Inspect network traffic for unusual AJAX requests to the vulnerable endpoint. Review plugin settings for unauthorized changes or injected scripts.

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Impact Analysis

An attacker could inject malicious scripts into your website. These scripts would execute when visitors or administrators view the site, potentially stealing sensitive data, spreading malware, or defacing the site. Even low-privilege users like Subscribers can exploit this issue.

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Compliance Impact

This vulnerability could lead to data breaches by allowing attackers to steal user data or inject malicious scripts. Such breaches may violate GDPR, HIPAA, or other regulations, resulting in legal penalties, fines, or reputational damage due to non-compliance with data protection requirements.

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Mitigation Strategies

Update the JCH Optimize plugin to version 6.0.1 or later immediately. Remove unnecessary user roles like Subscribers if not required. Monitor site activity for suspicious changes or scripts.

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