Directory traversal vulnerability in Nodez 4.6.1.1 and earlier allows remote attackers to read or include arbitrary PHP files via a .. (dot dot) in the op parameter, as demonstrated by inserting malicious Email parameters into list.gtdat, then accessing list.gtdat using the op parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/25119
http://www.vupen.com/english/advisories/2006/0899