No Page Comment <= 1.1 - Reflected Cross-Site Scripting

The No Page Comment plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via $_SERVER['REQUEST_URI'], which is echoed to a form in versions up to, and including, 1.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. This is not likely to be exploitable in modern browsers.