Compliance Impact

The vulnerability allows unauthenticated attackers to escalate privileges and potentially gain full control of the affected website. This could lead to unauthorized access to sensitive personal data, which may result in non-compliance with data protection regulations such as GDPR and HIPAA.

Since the issue is classified under OWASP Top 10 A7 (Identification and Authentication Failures), it highlights weaknesses in authentication controls that are critical for protecting user data and maintaining regulatory compliance.

Failure to patch this vulnerability could expose organizations to data breaches, risking violations of privacy laws and standards that require strict access controls and protection of personal information.

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Detection Guidance

The vulnerability affects versions 1.0.9 and below of the WordPress Registration Form for WooCommerce Plugin and allows unauthenticated privilege escalation.

To detect this vulnerability on your system, first verify the plugin version installed on your WordPress site. If the version is 1.0.9 or below, your system is vulnerable.

You can check the plugin version by running the following command in the WordPress installation directory:

• grep "Version:" wp-content/plugins/registration-form-for-woocommerce/readme.txt

Alternatively, you can check the plugin version via WP-CLI with this command:

• wp plugin get registration-form-for-woocommerce --field=version

To detect potential exploitation attempts on your network, monitor HTTP requests targeting the registration form endpoints of the plugin for suspicious activity, such as unauthorized privilege escalation attempts.

Patchstack has provided a mitigation rule to block attacks until the plugin is updated, so applying such rules in your web application firewall or intrusion detection system can help detect and prevent exploitation.

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Executive Summary

The WordPress Registration Form for WooCommerce Plugin, versions 1.0.9 and below, contains a critical vulnerability known as CVE-2026-54807. This flaw allows unauthenticated attackers to escalate their privileges from low-level accounts to higher-level accounts without authentication.

This means an attacker can gain unauthorized control over the affected website by exploiting this privilege escalation issue.

The vulnerability is classified under OWASP Top 10 A7 (Identification and Authentication Failures) and has a very high severity score of 9.8.

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Impact Analysis

This vulnerability can have severe impacts as it allows unauthenticated attackers to gain elevated privileges on your website.

• Attackers could take full control of the affected WooCommerce site.
• They may manipulate or steal sensitive data.
• The site’s integrity, confidentiality, and availability could be compromised.
• It could lead to mass exploitation campaigns targeting vulnerable sites.

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Mitigation Strategies

The vulnerability affects versions 1.0.9 and below of the WordPress Registration Form for WooCommerce Plugin. The immediate step to mitigate this vulnerability is to update the plugin to version 1.1.0 or later, which contains the patch for this issue.

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

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