Between 19:45 UTC and 19:50 UTC, there was a mistake in how information was stored temporarily (cached) on Beehaw. This mistake could have allowed some people to see and use other people’s accounts without permission.
If you were using the website during that time, please check that your account settings and email address are still correct. Also, make sure that any posts or actions you made during that time are still connected to your account.
It’s important to note that we don’t have any proof that this error was actually used by anyone to do anything bad during the short time it happened.
Have a look at this: https://github.com/LemmyNet/lemmy-ansible/pull/75
Sending proper cache-control headers from Lemmy will require some big code changes though.