PSA: Lemmy.world was compromised!

Discussion from here: https://lemmy.ml/post/1895271

Relevance: Infosec.pub may wish to consider defederation temporarily.

Temporary fix in place, but instances remain vulnerable. Post: https://lemmy.world/post/1290412

• UPDATE 2:58 UTC the injected code was removed from the main page, but cleanup efforts are still underway.
• UPDATE 3:11 UTC situation appears to be under control, but browse with caution.
• UPDATE 3:35 UTC main page exploited again! Website is unsafe.
• UPDATE 4:01 UTC reports coming in that other instances are getting owned. One report of comments trying to inject JavaScript into the page.
• UPDATE 4:13 UTC XSS vulnerability in page sidebar is reported relationship to the event is unknown.
• UPDATE 7:17 UTC Root cause was identified a while ago.