There is probably code somewhere that takes advantage of that fact, and under 5.10.0 that code is now less secure.

So, someone, somewhere might be unpacking a tainted string and relying upon the resultants continued tainted status to prevent them from ... ?

I agree that departure from the documented behaviour is not good, but I would be a little leary about labelling it as a "security risk".

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
"Too many [] have been sedated by an oppressive environment of political correctness and risk aversion."

In reply to Re^5: pack() untaints data : bug or undocumented Perl 5.10 feature? by BrowserUk
in thread pack() untaints data : bug or undocumented Perl 5.10 feature? by mr_mischief

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