source: https://www.securityfocus.com/bid/50925/info
Simple Machines Forum is prone to an arbitrary-file-upload vulnerability because it fails to properly sanitize user-supplied input.
An attacker may leverage this issue to upload arbitrary files to the affected computer; this can result in arbitrary code execution within the context of the vulnerable application.
Simple Machines Forum 1.1.15 is vulnerable; other versions may also be affected.
http://www.example.com/[patch]/FCKeditor/editor/filemanager/browser/default/browser.html?Type=File&Connector=connectors/php/connector.php