Missing CORS prevents third-party web clients (beehaw.org)

submitted 1 year ago by diamond@beehaw.org to c/support@beehaw.org

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Hey Beehaw mods!

I'm currently working on a Lemmy web client, but the lack of proper CORS headers is preventing anything from working :(

I just wanted to ask if the appropriate CORS headers could be added to the front-facing proxy layer. If you're using Caddy, I believe something like this should do the trick:

reverse_proxy ... {
  header_down Access-Control-Allow-Origin *
  header_down Access-Control-Allow-Methods *
  header_down Access-Control-Allow-Headers *
}

Relevant issue: https://github.com/LemmyNet/lemmy/issues/3109

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[-] diamond@beehaw.org 3 points 1 year ago

Thank you for the reply, I really appreciate it! Currently, my app has been migrated to the WS API so development can continue for now until the WS is removed completely in a later release or Lemmy addresses the CORS issue upstream.

As for the security concerns, I believe that most of them are addressed in this comment that is in the particular issue that I linked above.

It's worth noting that CORS really only applies in the browser and that the WS API currently bypasses this protection (hence me being able to continue with the development).