SSI.php in Simple Machines Forum (SMF) before 1.1.13, and 2.x before 2.0 RC5, does not properly restrict guest access, which allows remote attackers to have an unspecified impact via unknown vectors.

The loadUserSettings function in Load.php in Simple Machines Forum (SMF) before 1.1.13, and 2.x before 2.0 RC5, does not properly handle invalid login attempts, which might make it easier for remote attackers to obtain access or cause a denial of service via a brute-force attack.

Cross-site request forgery (CSRF) vulnerability in Simple Machines Forum (SMF) 2.x before 2.0.1 allows remote attackers to hijack the authentication of administrators or moderators via vectors involving image files, a different vulnerability than CVE-2011-3615. NOTE: some of these details are obtained from third party information.