Directory traversal vulnerability in calendar/inc/class.holidaycalc.inc.php in phpGroupWare 0.9.16.010 and earlier allows remote attackers to include arbitrary local files via a .. (dot dot) sequence and trailing null (%00) byte in the GLOBALS[phpgw_info][user][preferences][common][country] parameter.
https://www.exploit-db.com/exploits/2270
https://exchange.xforce.ibmcloud.com/vulnerabilities/28627
http://www.vupen.com/english/advisories/2006/3414