updated to indicate only glitch-soc is affected. There are other security updates in mastodon 4.0.x so not wasted effort to update if not running glitch-soc

This message for everyone on the fediverse:

First, please ensure you go into your account settings and enable two/multi factor authentication. No, I mean do it right now. I’ll wait till you’re done.

…

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Ok, thank you.

Now, if you are the admin of a mastodon instance running glitch-soc, please go upgrade to 4.0.2 ASAP.

Background: https://portswigger.net/research/stealing-passwords-from-infosec-mastodon-without-bypassing-csp