Path Traversal in Membership For WooCommerce Plugin

Executive Summary

This vulnerability is a Path Traversal issue in the WordPress Membership For WooCommerce Plugin versions 3.1.0 and below. It allows unauthenticated attackers to delete arbitrary files from a website by improperly limiting access to restricted directories.

The vulnerability is classified as high severity with a CVSS score of 8.6 and falls under the OWASP Top 10 category of Broken Access Control.

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Detection Guidance

This vulnerability allows unauthenticated attackers to delete files from a website using the Membership For WooCommerce plugin versions 3.1.0 and below.

Detection can involve monitoring for unusual file deletion activities or suspicious HTTP requests targeting the plugin's endpoints.

Specific commands or signatures are not provided in the available resources.

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Impact Analysis

An attacker exploiting this vulnerability can delete files from your website without authentication, which can cause the website to break or stop functioning.

Because the issue can be targeted in mass-exploit campaigns, thousands of websites could be affected regardless of their size or popularity.

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Compliance Impact

The Path Traversal vulnerability in the Membership For WooCommerce plugin (CVE-2026-57709) can have significant implications for compliance with standards and regulations like GDPR and HIPAA, depending on the context of the affected system.

• GDPR: If the vulnerable website processes or stores personal data of EU citizens, unauthorized file deletion (as enabled by this vulnerability) could lead to data loss, breaches of data integrity, or availability issues. GDPR requires organizations to implement appropriate technical measures to ensure the ongoing confidentiality, integrity, and availability of personal data (Article 32). Failure to patch this vulnerability could result in non-compliance and potential fines if an attack leads to a data breach or service disruption.
• HIPAA: For websites handling protected health information (PHI), this vulnerability could compromise the integrity and availability of PHI. HIPAA's Security Rule mandates safeguards to protect the confidentiality, integrity, and availability of electronic PHI (ePHI). Unauthorized file deletion could violate these requirements, leading to non-compliance and potential penalties if exploited.
• General Compliance Risks: The vulnerability falls under OWASP's Broken Access Control category, which is a critical security risk. Many compliance frameworks (e.g., PCI DSS, ISO 27001) require organizations to address such vulnerabilities promptly to maintain security controls. Failure to mitigate this issue could result in non-compliance with these frameworks.

Organizations using the affected plugin should prioritize updating to the patched version (3.1.1) to avoid compliance violations and potential legal or financial consequences.

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Mitigation Strategies

The immediate step to mitigate this vulnerability is to update the Membership For WooCommerce plugin to version 3.1.1 or later, where the issue is patched.

Until the update can be applied, it is advised to implement the mitigation rule issued by Patchstack to block attacks targeting this vulnerability.

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