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(URGENT) Lemmy has an XSS vulnerability in the sidebar (lemmy.ca)

submitted 1 year ago by [email protected] to c/[email protected]

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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.

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[–] [email protected] 4 points 1 year ago

I’m supposed to be at work in just over 5 hours.

shit that sucks. this happened at a bad time, i'm sorry. are their people besides you who are keeping an eye on this and maintaining it, for when you go off to work or when you need to sleep? cause everyone needs their sleep