Webgrind 1.1 - Reflected Cross-Site Scripting (XSS) via file Parameter

Webgrind 1.1 and before contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts via the file parameter in index.php. The application does not sufficiently encode user-controlled inputs, allowing attackers to execute arbitrary JavaScript in victim's browsers by crafting malicious URLs.