Input validation vulnerability in Slimstat Analytics 5.0.4

The Slimstat Analytics plugin for WordPress is vulnerable to an attack which can allow malicious code to be injected into certain webpages. This attack can be performed on versions up to and including 5.0.4 of the plugin, as there is inadequate protection against it. To perform the attack, a malicious user must be able to trick another user into clicking a link. If they are successful, the malicious code can then be executed on the webpage.