Missing Authorization in Stock Locations for WooCommerce

Executive Summary

CVE-2026-57419 is a Missing Authorization vulnerability in the Stock Locations for WooCommerce plugin (version 3.1.8 and earlier). It is a Broken Access Control issue that allows unprivileged users to perform actions that should require higher privileges due to missing authorization, authentication, or nonce token checks.

This means that users without proper permissions can exploit the plugin to carry out unauthorized operations, potentially compromising the security of the WooCommerce stock locations.

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Detection Guidance

Detecting this vulnerability on your system involves checking the installed version of the Stock Locations for WooCommerce plugin and verifying if it is vulnerable (versions 3.1.8 or earlier). Below are some methods to detect the vulnerability:

• Check the plugin version in your WordPress installation. Navigate to the WordPress admin dashboard, go to 'Plugins', and look for 'Stock Locations for WooCommerce'. The version number will be displayed there.
• Use the WordPress command-line interface (WP-CLI) to list installed plugins and their versions. Run the following command: wp plugin list --fields=name,version,status
• Inspect the plugin files directly on the server. Navigate to the wp-content/plugins/stock-locations-for-woocommerce directory and check the version in the plugin's main PHP file (e.g., stock-locations-for-woocommerce.php).
• Review web server logs for unusual access patterns or requests to plugin-specific endpoints that may indicate exploitation attempts. Look for requests to admin-ajax.php or other plugin-related endpoints from unauthorized users.
• Use a vulnerability scanner like Patchstack, Wordfence, or another security tool that can detect outdated or vulnerable WordPress plugins. These tools can automatically scan your installation and report vulnerabilities.

If the installed version is 3.1.8 or earlier, your system is vulnerable, and you should update to version 3.1.9 or later immediately.

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Impact Analysis

This vulnerability can allow attackers or unprivileged users to perform higher-privileged actions within the WooCommerce Stock Locations plugin, which can lead to unauthorized modifications or access to stock location data.

While the vulnerability does not impact confidentiality or availability directly (as per CVSS metrics), it has a high impact on integrity, meaning data could be altered or manipulated without proper authorization.

Because of its moderate severity (CVSS score 6.5), it poses a significant risk especially if exploited in mass campaigns targeting many websites using this plugin.

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Compliance Impact

This vulnerability, involving missing authorization and broken access control, can impact compliance with standards and regulations like GDPR and HIPAA in several ways.

• GDPR: The vulnerability allows unauthorized users to perform higher-privileged actions, which may lead to unauthorized access to personal data. Under GDPR, organizations must implement appropriate technical measures to ensure data protection. Failure to do so could result in non-compliance, leading to potential fines or legal consequences if a breach occurs.
• HIPAA: For organizations handling protected health information (PHI), this vulnerability could allow unauthorized access to sensitive data. HIPAA requires strict access controls to ensure only authorized personnel can access PHI. Exploitation of this vulnerability may violate HIPAA's Security Rule, resulting in penalties or legal action.
• General compliance risks: Many compliance frameworks, such as ISO 27001 or PCI DSS, require proper access control mechanisms. This vulnerability undermines those controls, potentially leading to non-compliance and increased risk of data breaches.

Organizations using the affected plugin should update to the patched version immediately to mitigate these risks and maintain compliance with relevant regulations.

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Mitigation Strategies

To mitigate the CVE-2026-57419 vulnerability in the Stock Locations for WooCommerce plugin, you should immediately update the plugin to version 3.1.9 or later.

Alternatively, if updating is not immediately possible, apply the mitigation rule provided by Patchstack to prevent exploitation of the broken access control vulnerability.

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