Multiple SQL injection vulnerabilities in Simple PHP Forum before 0.4 allow remote attackers to execute arbitrary SQL commands via the username parameter to (1) logon_user.php and (2) update_profile.php.

Multiple cross-site scripting (XSS) vulnerabilities in NSSboard (formerly Simple PHP Forum) 6.1 allow remote attackers to inject arbitrary web script or HTML via (1) HTML tags when BBcode is disabled; or the (2) user, (3) email, or (4) Real Name fields in a profile.