CGIHTTPServer security Breach

[Andy Worms]

I'm using CGIHTTPServer to try some scripts, apparently as a first step of 
building a real server. The CGIHTTPServer source code has a comment that warns 
of potential security problems:

SECURITY WARNING: DON'T USE THIS CODE UNLESS YOU ARE INSIDE A FIREWALL
-- it may execute arbitrary Python code or external programs.

Does someone know how can an outsider execute arbitrary python code or 
external problems? Are there simple ways to correct the code?

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Andy Worms

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