You don't just want to blindly untaint. You want to validate the input.

That makes sense...thanks

So, would a sensible approach be to check that $Bin resembles one of the places I expect it to be run from?
Something like this (untested): 

#!/usr/bin/perl -T

use CGI::Carp qw(fatalsToBrowser);

use FindBin qw($Bin);

if ($Bin =~ /^(\/home\/someuser\/somewebsite\/\w{2,4}\/cgi-bin)/) {
    $Bin = $1;
}

use lib "$Bin";
use Site::HTML;

use strict;
use warnings;

[download]
The \w{2,4} allows for the different subdomains used for development, testing, etc.

I don't recall seeing anything like that in any other Perl code I've seen that uses FindBin and lib so I'm guessing there is a better way to do it...

In reply to Re^4: Using relative paths with taint mode by Bod
in thread Using relative paths with taint mode by Bod

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