Directory traversal vulnerability in ModifyMessage.php in YaBB SE 1.5.4 through 1.5.5b allows remote attackers to delete arbitrary files via a .. (dot dot) in the attachOld parameter.
Multiple SQL injection vulnerabilities in YaBB SE 1.5.4 through 1.5.5b allow remote attackers to execute arbitrary SQL via (1) the msg parameter in ModifyMessage.php or (2) the postid parameter in ModifyMessage.php.
SQL injection vulnerability in post.php for YaBB SE 1.5.4 and 1.5.5 allows remote attackers to obtain hashed passwords via the quote parameter.
Cross-site scripting (XSS) vulnerability in index.php in Yet another Bulletin Board (YaBB) allows remote attackers to inject arbitrary web script or HTML via the categories parameter.
SQL injection vulnerability in profile.php in YaBB SE 1.5.5 and earlier allows remote attackers to execute SQL commands via a double-encoded user parameter in a viewprofile action.