Mongoose 2.8.0 and earlier allows remote attackers to obtain the source code for a web page by appending a / (slash) character to the URI.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2009-4501
http://secunia.com/advisories/36934
http://pocoftheday.blogspot.com/2009/10/mongoose-web-server-v280-remote-source_22.html