WC Vendors IDOR in Product Variations

Executive Summary

This is an Insecure Direct Object Reference (IDOR) vulnerability in the WC Vendors WordPress plugin before version 2.7.2.1. It allows authenticated users with the vendor role to modify product variations and posts belonging to other vendors without verifying ownership. The flaw stems from not validating user-supplied IDs properly.

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Detection Guidance

Check if your WC Vendors plugin version is below 2.7.2.1. Log in as a vendor and attempt to modify product variations or posts owned by other vendors. Monitor for unauthorized changes to product status, titles, or post ownership.

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Impact Analysis

An attacker with vendor access could change product details, alter post statuses, or modify titles of posts they do not own. This could disrupt store operations, misrepresent products, or cause data inconsistencies on the WordPress site.

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Compliance Impact

This vulnerability could lead to unauthorized data modifications, potentially violating integrity and access control requirements in GDPR and HIPAA. Unauthorized changes to product or post data may result in non-compliance with data protection and security standards.

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Mitigation Strategies

Update the WC Vendors plugin to version 2.7.2.1 or later immediately. Review logs for suspicious activity by vendor accounts. Restrict vendor permissions to the minimum required. Apply the latest security patches for WordPress and all plugins.

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