PHP remote file inclusion vulnerability in manager/media/browser/mcpuk/connectors/php/Commands/Thumbnail.php in Modx CMS 0.9.2.1 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the base_path parameter. NOTE: it is possible that this is a vulnerability in FCKeditor.
https://www.exploit-db.com/exploits/2706
https://exchange.xforce.ibmcloud.com/vulnerabilities/29989