eoc.py in Enemies of Carlotta (EoC) before 1.2.4 allows remote attackers to execute arbitrary commands via shell metacharacters in an "SMTP level e-mail address".
https://exchange.xforce.ibmcloud.com/vulnerabilities/30923
http://www.vupen.com/english/advisories/2006/5000
http://www.securityfocus.com/bid/21572
http://www.debian.org/security/2006/dsa-1236
http://secunia.com/advisories/23382