Multiple cross-site scripting (XSS) vulnerabilities in eXpBlog 0.3.5 and earlier allow remote attackers to inject arbitrary web script or HTML via (1) the query string (PHP_SELF) in kalender.php or (2) the captcha_session_code parameter in pre_details.php.
https://exchange.xforce.ibmcloud.com/vulnerabilities/29409
http://www.vupen.com/english/advisories/2006/3973
http://www.securityfocus.com/archive/1/448102/100/0/threaded
http://www.expblog.de/board/viewtopic.php?t=317
http://securitytracker.com/id?1017028