Multiple incomplete blacklist vulnerabilities in the filemanager::isFileExclude method in the Media Manager in Dotclear before 2.6.3 allow remote authenticated users to execute arbitrary PHP code by uploading a file with a (1) double extension or (2) .php5, (3) .phtml, or some other PHP file extension.
The dcXmlRpc::setUser method in nc/core/class.dc.xmlrpc.php in Dotclear before 2.6.3 allows remote attackers to bypass authentication via an empty password in an XML-RPC request.
SQL injection vulnerability in admin/categories.php in Dotclear before 2.6.3 allows remote authenticated users with the manage categories permission to execute arbitrary SQL commands via the categories_order parameter.
Dotclear before 2.6.2 allows remote attackers to execute arbitrary PHP code via a serialized object in the dc_passwd cookie to a password-protected page, which is not properly handled by (1) inc/public/lib.urlhandlers.php or (2) plugins/pages/_public.php.