SilverStripe before 2.4.2 allows remote authenticated users to change administrator passwords via vectors related to admin/security.

SilverStripe 2.3.x before 2.3.10 and 2.4.x before 2.4.4 allows remote attackers to bypass the cross-site request forgery (CSRF) protection mechanism and hijack the authentication of administrators via vectors related to "form action requests" using a controller.

SilverStripe 2.3.x before 2.3.8 and 2.4.x before 2.4.1, when running on servers with certain configurations, allows remote attackers to obtain sensitive information via a direct request to PHP files in the (1) sapphire, (2) cms, or (3) mysite folders, which reveals the installation path in an error message.

The setName function in filesystem/File.php in SilverStripe 2.3.x before 2.3.8 and 2.4.x before 2.4.1 allows remote authenticated users with CMS author privileges to execute arbitrary PHP code by changing the extension of an uploaded file.

SilverStripe before 2.4.2 does not properly restrict access to pages in draft mode, which allows remote attackers to obtain sensitive information.

The Security/changepassword URL action in SilverStripe 2.3.x before 2.3.10 and 2.4.x before 2.4.4 passes a token as a GET parameter while changing a password through email, which allows remote attackers to obtain sensitive data and hijack the session via the HTTP referer logs on a server, aka "HTTP referer leakage."