Executive Summary

The vulnerability exists in the WCFM Marketplace – Multivendor Marketplace for WooCommerce plugin for WordPress, specifically in all versions up to and including 3.7.0. It is an Insecure Direct Object Reference (IDOR) issue caused by the lack of authorization checks in the `wcfm-refund-requests-form` AJAX controller.

This means that unauthenticated attackers can exploit this flaw to create arbitrary refund requests for any order ID and item ID without proper permission.

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Impact Analysis

This vulnerability can lead to financial loss because attackers can submit refund requests for orders they do not own.

If the plugin settings allow automatic refund approval, these unauthorized refund requests could be processed without manual intervention, resulting in unauthorized refunds.

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Compliance Impact

I don't know

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Detection Guidance

I don't know

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Mitigation Strategies

To mitigate this vulnerability, you should update the WCFM Marketplace – Multivendor Marketplace for WooCommerce plugin to a version later than 3.7.0 where the authorization checks in the `wcfm-refund-requests-form` AJAX controller are properly implemented.

If an update is not immediately available, consider disabling the refund request functionality or the affected AJAX controller to prevent unauthenticated attackers from creating arbitrary refund requests.

Additionally, review your plugin settings to ensure that automatic refund approval is disabled to reduce the risk of financial loss.

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