this post was submitted on 10 Jul 2023
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Hey folks! I have spent this morning helping lemmy.world mitigate the issue. I have also sent out mitigation instructions to other admins as well.
For the particular exploit that was used on lemmy.world:
So there should not be any reason to defederate. I will continue monitoring and investigating, if further vulnerabilities pop up then I will adjust accordingly.
Thank you for being a valuable resource for the lemmyverse as a whole!
You rock! Sorry if this is a stupid question, but if both instances are running the same version of Lemmy, why would lemmy.world be affected but not lemm.ee?
Malicious custom emoji contained scripts that sent session cookies to the attackers.
Makes sense! Thank you.