[原文]Multiple cross-site scripting (XSS) vulnerabilities in PostNuke 0.750 and 0.760RC3 allow remote attackers to inject arbitrary web script or HTML via the (1) skin or (2) paletteid parameter to demo.php in the Xanthia module, or (3) the serverName parameter to config.php in the Multisites (aka NS-Multisites) module.
PostNuke contains a flaw that allows a remote cross site scripting attack. This flaw exists because the application does not validate the "skin" and "paletteid" variables upon submission to the "demo.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 0.750b or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.