Multiple cross-site scripting (XSS) vulnerabilities in Gregarius 0.5.2 allow remote attackers to inject arbitrary web script or HTML via the (1) rss_query parameter to search.php or (2) tag parameter to tags.php.
https://exchange.xforce.ibmcloud.com/vulnerabilities/25058
http://www.vupen.com/english/advisories/2006/0819
http://www.securityfocus.com/bid/16939
http://www.securityfocus.com/archive/1/426656/100/0/threaded