SQL injection vulnerability in func/login.php in MercuryBoard 1.1.5 and earlier allows remote attackers to execute arbitrary SQL commands via the User-Agent HTTP header ($_SERVER['HTTP_USER_AGENT']).
Cross-site scripting (XSS) vulnerability in MercuryBoard 1.0.x and 1.1.x allows remote attackers to inject arbitrary HTML and web script via the f parameter.