Cross-site scripting (XSS) vulnerability in index.php in iPei Guestbook 2.0 allows remote attackers to inject arbitrary web script or HTML via the pg parameter, a different vector than CVE-2005-4597.
Improper Neutralization of Input During Web Page Generation The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.