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']).
SQL injection vulnerability in post.php for MercuryBoard 1.1.1 allows remote attackers to execute arbitrary SQL commands via a reply post action for index.php with (1) the t parameter or (2) the qu parameter.
SQL injection vulnerability in index.php for MercuryBoard 1.1.2 allows remote attackers to inject arbitrary SQL commands via the f parameter.