In your code you don't show how you set $ENV{PATH} to a fixed value - I would start with that...

That's because I don't!
Nowhere in my code have I set $ENV{PATH} so it is either part of the server configuration or it is set by another module. These are the ones I am using: 

use DBI;
use DBD::mysql;
use Exporter;
use Template;
use MIME::Lite;

[download]

Update:
Printing $ENV{PATH} gives /usr/local/bin:/usr/bin:/bin

In reply to Re^2: Insecure CPAN module in taint mode by Bod
in thread Insecure CPAN module in taint mode by Bod

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