Clearfy Cache Plugin Unsafe Redirect to External URL

Executive Summary

The Clearfy Cache WordPress plugin before version 2.4.3 has a flaw in its Cyrlitera old-URL redirect handler. It does not properly validate redirect targets, allowing unauthenticated attackers to redirect visitors to arbitrary external URLs when a specific non-default option is enabled.

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Detection Guidance

To detect this vulnerability, check if the Clearfy Cache WordPress plugin version is below 2.4.3. Inspect server logs for unusual redirect patterns or external URL redirections originating from the plugin's Cyrlitera 404 handler. No specific commands are provided in the context.

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Impact Analysis

This vulnerability could allow attackers to redirect your website visitors to malicious sites, potentially leading to phishing attacks, malware downloads, or other security risks for your users.

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Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or other standards as it involves an unsafe redirect in a WordPress plugin. However, if exploited, it could lead to phishing attacks or unauthorized data exposure, which may indirectly impact compliance by compromising user trust or data integrity.

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Mitigation Strategies

Update the Clearfy Cache WordPress plugin to version 2.4.3 or later to address the vulnerability.

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