It has been reported that Jason Maloney's Guestbook is prone to a HTML injection vulnerability that may allow an attacker to execute HTML code in a user's browser. The issue is reported to be present in the 'name' field. Although unconfirmed other fields may be affected as well. This problem is due to insufficient sanitization of user-supplied input. Successful exploitation of this vulnerability may allow an attacker to steal cookie-based authentication credentials. Other attacks are also possible.
It has been reported that Jason Maloney's Guestbook is prone to a HTML injection vulnerability that may allow an attacker to execute HTML code in a user's browser. The issue is reported to be present in the 'name' field. Although unconfirmed other fields may be affected as well. This problem is due to insufficient sanitization of user-supplied input. Successful exploitation of this vulnerability may allow an attacker to steal cookie-based authentication credentials. Other attacks are also possible.