An independent security researcher Sho Odagiri from GMO Cybersecurity by Ierae submitted a severe issue with Metabase. We generally don’t blog about every bug, but this one is dangerous so we want to make sure that we reach out on all channels to our community to let them know that they should pay attention to this. While we have no evidence that the vulnerability was ever exploited in the wild, and exploiting this vulnerability isn’t simple, if you are self-hosting Metabase, you should IMMEDIATELY update your Metabase instances (if you have not already).