Input validation vulnerability in Translate WordPress with GTranslate 3.0.4

The GTranslate plugin for WordPress is vulnerable to a type of attack called Stored Cross-Site Scripting. This is a security issue that affects versions up to and including 3.0.3 of the plugin. It allows attackers with administrator-level permissions to insert malicious code into a page, which will be executed when another user visits the page. This only affects websites that are running multiple sites or have disabled a certain feature.