[原文]Multiple cross-site scripting (XSS) vulnerabilities in PhpBB 2.0.8 allow remote attackers to inject arbitrary web script or HTML via (1) the cat_title parameter in index.php, (2) the faq parameter in lang_faq.php as accessible from faq.php, or (3) the faq parameter in lang_bbcode.php as accessible from faq.php.
phpBB contains a flaw that allows a remote cross site scripting attack. This flaw exists because the application does not validate the "faq" variable upon submission to the lang_faq.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 2.0.9 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.