Nonce code vulnerability

  1. you should not use nonce on public pages. Nonces should protect against action which can perfom things the user might regret that they were done without his explicit consent. While the user might also regret sending some kind of “contact form” that is more of a mental thing, not something that can be solved with software 😉

  2. For form on pages in which the user is authenticated, nonces are unique per user and one user can not just immitate another if he knows his own nonce.

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