This vulnerability in WP Wham Checkout Files Upload for WooCommerce (<= 2.2.0) involves improper input sanitization leading to stored cross-site scripting (XSS). An attacker with low privileges and requiring user interaction can inject malicious scripts that execute in the context of affected users, potentially impacting confidentiality, integrity, and availability to a limited extent. The vulnerability is network exploitable and affects the plugin's web page generation process.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of users interacting with the affected plugin, potentially leading to partial disclosure of information, modification of data, or disruption of availability. The impact is limited by the requirement for user interaction and the attacker's low privileges, resulting in a medium severity rating.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider restricting access to the affected plugin features and monitor for suspicious activity related to stored XSS. Avoid enabling untrusted users to upload files or input data processed by this plugin.