The test I had in mind was what you have but with: 

$ENV{REQUEST_URI} = q{/Products/bt-";system('ls -l');".aspx};

[download]

I tried that too, and it also doesn't do anything. That's because all eval sees is ""/s/Products/$1"". The variable gets interpolated, but it doesn't execute the result. Given that, maybe there really isn't anything the user can do.

In reply to Re^5: Using Regexp Patterns as Variables by kyle
in thread Using Regexp Patterns as Variables by Rodster001

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