Multiple directory traversal vulnerabilities in download.php in Chupix CMS 0.2.3 allow remote attackers to read or overwrite arbitrary files via a .. (dot dot) in the (1) fichier or (2) repertoire parameter, or create arbitrary directories via a .. (dot dot) in the (3) repertoire parameter.
https://www.exploit-db.com/exploits/4411
https://exchange.xforce.ibmcloud.com/vulnerabilities/36641
http://www.vupen.com/english/advisories/2007/3180