Multiple directory traversal vulnerabilities in the G/PGP (GPG) Plugin 2.0, and 2.1dev before 20070614, for Squirrelmail allow remote authenticated users to include and execute arbitrary local files via a .. (dot dot) in the help parameter to (1) gpg_help.php or (2) gpg_help_base.php.
https://exchange.xforce.ibmcloud.com/vulnerabilities/35362
http://www.vupen.com/english/advisories/2007/2513
http://www.securityfocus.com/bid/24874
http://security.gentoo.org/glsa/glsa-200708-08.xml
http://secunia.com/advisories/26424
http://secunia.com/advisories/26035
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=555