Cross-site scripting (XSS) vulnerability in inc-core-admin-editor-previouscolorsjs.php in the FlexCMS 2.5 and earlier, when register_globals is enabled, allows remote attackers to inject arbitrary web script or HTML via the PreviousColorsString parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/44521
http://www.securityfocus.com/bid/30709
http://www.securityfocus.com/archive/1/495508/100/0/threaded