Hello! I am trying to use Discourse under WAF and I am getting 403 on only message bus post requests. I understand this isn’t a Discourse specific problem but I have tried many things in the last day and I can’t understand why would I get 403 request on specifically message bus. Any guesses/ideas would be appreciated! Thank you.
Okay I solved the problem! I am going to write it here. Maybe by some chance somebody will have the same problem in the future:
I was using BunkerWeb and it uses Modsecurity in one of their backend applications. Appearently that modsecurity core-set rule take message bus post request as an sql injection attack.