Directory traversal vulnerability in index.php in SAC.php (SACphp), as used in Yerba 6.3 and earlier, allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the mod parameter.
https://www.exploit-db.com/exploits/6687
https://exchange.xforce.ibmcloud.com/vulnerabilities/45708
http://www.vupen.com/english/advisories/2008/2754
http://www.securityfocus.com/archive/1/497103