Customer Reviews for WooCommerce Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the Customer Reviews for WooCommerce plugin for WordPress, affecting all versions through 5.93.1. The issue arises from inadequate input sanitization and output escaping, allowing authenticated attackers with customer-level access or higher to inject arbitrary web scripts. These scripts execute when users access the affected pages. Although the vulnerability can be exploited by unauthenticated attackers with guest checkout enabled, they would still need to place an order to obtain a valid form ID required for exploitation.

Impact

Exploitation of this vulnerability allows for stored cross-site scripting, where injected scripts are executed in the context of the user viewing the page.

Reproduction

To reproduce this vulnerability, an authenticated user with customer-level access must inject a script through the 'displayName' parameter while submitting a review. This can be done by placing an order to obtain a valid form ID, which is then used to submit the review with the injected script. If guest checkout is enabled, an unauthenticated user can also exploit this vulnerability by placing an order and injecting a script via the same method.

Remediation

Users are advised to update the Customer Reviews for WooCommerce plugin to version 5.94.0 or later.