The parseAddress code in (1) SquirrelMail 1.4.0 and (2) GPG Plugin 1.1 allows remote attackers to execute commands via shell metacharacters in the "To:" field.Referenceshttps://exchange.xforce.ibmcloud.com/vulnerabilities/14079http://www.bugtraq.org/advisories/_BSSADV-0001.txthttp://marc.info/?l=bugtraq&m=107247236124180&w=2http://www.securityfocus.com/bid/9296http://www.securityfocus.com/archive/1/348366