Cross-site scripting (XSS) vulnerability in addcomment.php in Bit 5 Blog 8.01 allows remote attackers to inject arbitrary web script or HTML via a javascript URI in an <a> tag in the comment parameter, which strips most tags but not <a>.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24129
http://www.vupen.com/english/advisories/2006/0195
http://www.securityfocus.com/archive/1/421994/100/0/threaded