Re: [w3c/editing] clarifications for the pickling design proposal (Issue #393)

> What about the history question?

I'm guessing you're asking this question more plainly: can attacker.com write code to take all remaining mime-types from the 100 allowable mime-types, and then test arbitrary mime-types to see if they were used previously by observing which ones aren't rejected by `navigator.clipboard.write`?

The answer to that question is no, because there's no such thing as 100 allowable mime-types.  The number of mime-types that can be written to the clipboard is infinite, but you can't write more than 100 to the clipboard in a single `navigator.clipboard.write` operation.  A subsequent write destroys the previous clipboard contents and puts a new set in its place.

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Received on Tuesday, 15 March 2022 16:48:49 UTC