It's a good thing that the #Mastodon #SDF instance patched this quickly though despite the day plus long outage. Tell your #admins to patch this ASAP! https://github.com/mastodon/mastodon/security/advisories/GHSA-3fjr-858r-92rw
More coverage here: https://www.theregister.com/2024/02/02/critical_vulnerability_in_mastodon_is/