Multiple cross-site scripting (XSS) vulnerabilities in PhpBB Plus 1.52 and earlier allow remote attackers to inject arbitrary web script or HTML via the bsid parameter to (1) groupcp.php, (2) index.php, (3) portal.php, (4) viewforum.php, or (5) viewtopic.php, (6) the c parameter to index.php, or (7) the article parameter to portal.php.