    public function admin () {
        User::secure();
        System::gZip();
        if( User::access(2) ) {
            System::versionCheck();
            Control::handler('backend');
        }else{
            Theme::admin('header');
            Control::error('noaccess');
            Theme::admin('footer');
        }
        System::Zipped();
    }

The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.