cross-posted from: https://sh.itjust.works/post/923025
lemmy.world is a victim of an XSS attack right now and the hacker simply injected a JavaScript redirection into the sidebar.
It appears the Lemmy backend does not escape HTML in the main sidebar. Not sure if this is also true for community sidebars.
Without going into specifics, yes.
well uh oh. Seems like we’re ok for now at least, maybe we should get the admins to shut the instance down
I saw on Hexbear that XSS affected them as well. Do you know how an instance gets targeted by it? The post (on shitjustworks) that I read about it seemed to be related to code execution in the sidebar. So I thought the only way to do this would be if an admin modified the sidebar. But seems like this is not the case from what I read on Hexbear.
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