PHP remote file inclusion vulnerability in Redaxo 2.7.4 allows remote attackers to execute arbitrary PHP code via a URL in the (1) REX[INCLUDE_PATH] parameter in (a) addons/import_export/pages/index.inc.php and (b) pages/community.inc.php.
https://www.exploit-db.com/exploits/1861
https://exchange.xforce.ibmcloud.com/vulnerabilities/26887
http://www.vupen.com/english/advisories/2006/2109
http://www.securityfocus.com/bid/18229
http://www.securityfocus.com/archive/1/435733/100/0/threaded
http://securitytracker.com/id?1016213