Today I got tired of rewriting the same sendmail scraps every time I need to mail something, so I went and installed Mail::Mailer. Surprise! My CGI script now fails with 
Insecure dependency in piped open while running with -T switch at 
/usr/pkg/lib/perl5/site_perl/Mail/Mailer.pm line 269.

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Mailer.pm attempts to open($self, "|-"), which looks safe enough to me since I've explicitly told it where sendmail is. Obviously, taint checking is too critical to trade off for the convenience of a sendmail wrapper. Is there anything I can do in my code to avoid the error? Do I need to change the module? Go back to writing my own mail code? It seems this problem would pop up all the time with CPAN modules. There must be a solution, if only requesting that module writers make their code taint-safe. Suggestions?

In reply to Taint unsafe modules by athomason

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