Filenames are something to consider. For instance, allowing something called ../index.html is probably something you don't want. Checking mime types and file extensions is one thing, but consider generating a new file name in the script instead of trusting user input might help security if the file name doesn't matter.

In reply to Re: security issues for allowing images to be uploaded to the server by archen
in thread security issues for allowing images to be uploaded to the server by jonnyfolk

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