Cross-site scripting (XSS) vulnerability in guestbook.php in G-Book 1.0 allows remote attackers to inject arbitrary web script or HTML via the g_message parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/25475
http://www.vupen.com/english/advisories/2006/1100
http://www.securityfocus.com/bid/17253
http://www.securityfocus.com/archive/1/428900/100/0/threaded
http://www.h4cky0u.org/advisories/HYSA-2006-006-g-book.txt
http://securitytracker.com/id?1015830