Subscriber Privilege Escalation in Estatik Plugin

Executive Summary

This vulnerability is a Subscriber Privilege Escalation in the Estatik WordPress plugin versions 4.3.5 and below. It allows low-privilege users, such as subscribers, to escalate their privileges to administrator level, gaining full control over the website.

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Detection Guidance

Check if the Estatik plugin version is 4.3.5 or below. Use commands like 'wp plugin list' in WordPress CLI or inspect the plugin files in /wp-content/plugins/estatik/. Look for unauthorized privilege changes in user logs.

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Impact Analysis

This vulnerability allows attackers to take full control of your website, potentially leading to data theft, defacement, or further compromise of your systems. It is actively exploitable and may be targeted in mass-exploit campaigns.

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Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, which may violate compliance requirements under GDPR and HIPAA. Unauthorized privilege escalation to administrator level risks exposing personal or health information, potentially resulting in legal penalties and reputational damage.

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Mitigation Strategies

Update the Estatik plugin to version 4.3.6 or later immediately. If updating is not possible, apply the Patchstack mitigation rule to block attacks until an update is available.

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