perlpodder before 0.5 allows remote attackers to execute arbitrary code via shell metacharacters in the URL of a podcast, which are executed when saving the URL to a log file. NOTE: the wget vector is already covered by CVE-2006-2548.
https://exchange.xforce.ibmcloud.com/vulnerabilities/26575
http://www.vupen.com/english/advisories/2006/1906
http://www.securityfocus.com/archive/1/434711/100/0/threaded
http://secunia.com/advisories/20238
http://archives.neohapsis.com/archives/fulldisclosure/2006-05/0570.html