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Full Version: Potential exploit in CSRF protection
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El Forum

[eluser]elverion[/eluser]
I'm working on a site, and just started using the CSRF provided by CI. After enabling it, I've tested the site again with Acunetix Vulnerability Scanner. The result: a potential CSS attack.
Quote:The Cookie variable ci_csrf_token has been set to >">[removed]alert(409371738445);[removed].
Note: the [removed] bit is <_ScRiPt
> (without the _) and corresponding close tag.

On submit, it then echos the submitted CSRF_token, which breaks HTML. Shouldn't it be run through htmlspecialchars() or htmlentities()?