The attachment capability in Compose Mail in BasiliX Webmail 1.1.0 does not check whether the attachment was uploaded by the user or came from a HTTP POST, which could allow local users to steal sensitive information like a password file.
https://exchange.xforce.ibmcloud.com/vulnerabilities/9386
http://www.securityfocus.com/bid/5062
http://archives.neohapsis.com/archives/vulnwatch/2002-q2/0117.html
http://archive.cert.uni-stuttgart.de/archive/bugtraq/2002/06/msg00247.html