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Re: Preventing XSS

by techcode (Hermit)
on Sep 20, 2007 at 10:47 UTC ( #640085=note: print w/replies, xml ) Need Help??

in reply to Preventing XSS

I ended up using what ikegami sugested + whitelist of allowed charactes in the fields. I needed to encode them since I print that back (HTML::FillInForm) together with error messages.

So in Data::FormValidator I created additional constraints such as that ordinary fields should contain alphanums, underscore, minus, space and dot. Email obviosly takes out space and adds @, while URL's add : and /

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