The WPC Composite Products for WooCommerce plugin suffers from a stored cross-site scripting vulnerability due to improper neutralization of input during web page generation. Specifically, the 'wooco_components[0][name]' parameter is not properly sanitized or escaped, and the ajax_save_components function lacks proper authorization controls. This allows authenticated users with subscriber-level privileges or higher to inject arbitrary JavaScript code that executes in the context of other users viewing the affected pages. The vulnerability affects all plugin versions up to 7.2.7. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, required privileges, no user interaction, and partial impact on confidentiality and integrity.

An attacker with at least subscriber-level access can inject persistent malicious scripts into pages generated by the plugin. These scripts execute in the browsers of users who view the infected pages, potentially leading to unauthorized actions or data disclosure within the context of the affected WordPress site. The vulnerability impacts confidentiality and integrity but does not affect availability. There are no reports of active exploitation in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or fix information is provided, users should monitor the wpclever vendor channels for updates. Until a fix is available, consider restricting subscriber-level access and reviewing plugin usage to limit exposure. Avoid using affected plugin versions if possible.