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(URGENT) Lemmy has an XSS vulnerability in the sidebar (self.main)

submitted 2 years ago by AlternateRoute to c/main

41 comments fedilink hide all child comments

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] 3 points 2 years ago (1 children)

thanks for your hard work, even though i am sure you're tired as hell. i think that person's idea about a minimum complexity requirement in addition to 2FA is a good idea, perhaps something like a complex password generator like LastPass or something, anything.

[–] TruckBC 8 points 2 years ago* (last edited 2 years ago) (1 children)

We can put it in place as a internal policy. I'm 99% confident all admins on Lemmy.ca are using complex password generators, that are hopefully not LastPass with their history of being hacked 😅

Edit: yeah I'm tired. It's like 3 hours post bed time. I'm supposed to be at work in just over 5 hours.

[–] [email protected] 4 points 2 years 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