The XWeb web server that I had written for Linux has been found to have some serious vulnerability.
Read about it here - http://www.securitytracker.com/alerts/2004/Mar/1009514.html
Though not commercial grade - an under grad project which I have not modified for quite sometime, I will try to fix this up as soon as possible. (Bad coding on my side I agree - no excuses ... ;-))
The server project (and code) is available at the Freshmeat site - http://freshmeat.net/projects/httpwebserver/
Thank you Donato Ferrante for having pointed out the flaw.