GUI.pm in yarssr 0.2.2, when Gnome default URL handling is disabled, allows remote attackers to execute arbitrary commands via shell metacharacters in a link element in a feed.
https://exchange.xforce.ibmcloud.com/vulnerabilities/38191
http://www.vupen.com/english/advisories/2007/3679
http://www.debian.org/security/2008/dsa-1477
http://secunia.com/advisories/28671