Directory traversal vulnerability in index.php in Exponent CMS 0.96.3 allows remote attackers to read and execute arbitrary local files via a .. (dot dot) sequence in the view parameter in the show_view action in the calendarmodule module, as demonstrated by executing PHP code through session files.
https://www.exploit-db.com/exploits/2391
https://exchange.xforce.ibmcloud.com/vulnerabilities/29077
https://euvd.enisa.europa.eu/vulnerability/EUVD-2006-4949
http://www.vupen.com/english/advisories/2006/3708