yuranahomes.com.au XSS vulnerability

Vulnerable URL: http://yuranahomes.com.au/wp-content/plugins/wp-simpleviewer/svcore/full.html?bg="transparent=http://yuranahomes.com.au/wp-content/plugins/wp-simpleviewer/config.php?galleryid=6=http://yuranahomes.com.au/properties/ambers-house/=true=true=false=true=true=true=fff=fff=true=-1=Amber...