[原文]Multiple cross-site scripting (XSS) vulnerabilities in Extreme Messageboard (XMB) 1.8 SP3 and 1.9 beta allow remote attackers to inject arbitrary web script or HTML via the (1) xmbuser parameter to xmb.php, (2) folder parameter to u2u.php, (3) viewmost, replymost, or latest parameter to stats.php, (4) message or icons parameter to post.php, (5) threadlist, pagelinks, forumlist, navigation, or (6) forumdisplay parameter to forumdisplay.php.
XMB Forum contains a flaw that allows a remote cross site scripting attack. This flaw exists because the application does not validate the 'xmbuser' variable upon submission to the xmb.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 1.9.10 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.