zlacker

>>aendru+(OP)
Solution is also on the works like use /.well-known/, so this is more like funny, rather than a big problem.

Key to trick was to have bucket named "xrpc" and store a file there: https://s3.amazonaws.com/xrpc/com.atproto.identity.resolveHa...

There is also another funny thing in the image, the user posting about is sending one from "retr0-id.translate.goog", which is odd. Somehow he has got https://retr0-id.translate.goog/xrpc/com.atproto.identity.re... to redirect to his page, and gotten that handle as well.

>>Cianti+u2
Eh, it’s worse than just funny; it’s concerning, because they should have known about and easily avoided this kind of vulnerability, it’s standard stuff you have to think about. So what else have they missed?