[原文]Multiple cross-site scripting (XSS) vulnerabilities in Michael Salzer Guestbox 0.6, and other versions before 0.8, allow remote attackers to inject arbitrary web script or HTML via (1) HTML tags that follow a "http://" string, which bypasses a regular expression check, and (2) other unspecified attack vectors.
Guestbox contains a flaw that allows a remote cross site scripting attack. This flaw exists because the application does not validate the 'homepage' variable upon submission to the gbshow.php script. This could allow a user to create a specially crafted URL that would execute arbitrary code in a user's browser within the trust relationship between the browser and the server, leading to a loss of integrity.
Upgrade to version 0.7 BETA or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.