AMTT Hotel Broadband Operation System language.php cross site scripting

A vulnerability was found in AMTT Hotel Broadband Operation System up to 3.0.3.151204 and classified as problematic. This issue affects some unknown processing of the file /language.php. The manipulation of the argument LangID/LangName/LangEName leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.