Cross-site scripting (XSS) vulnerability in guestbook.js.php in MJGuest 6.8 GT allows remote attackers to inject arbitrary web script or HTML via the link parameter.

Cross-site scripting (XSS) vulnerability in mjguest.php in Mjguest 6.7 GT Rev.01 allows remote attackers to inject arbitrary web script or HTML via the level parameter in a redirect action, possibly involving interface/redirect.htm.php.

Open redirect vulnerability in interface/redirect.htm.php in Mjguest 6.7 GT Rev.01 allows user-assisted remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the goto parameter in a redirect action to mjguest.php. NOTE: this is user-assisted because there is a delay and a notification before redirection occurs.