Issue
Events sent by the SDK get a 403 response from the server with the message:
{"detail":"event submission rejected with_reason: Cors"}Applies To
All SaaS Customers and Self-Hosted Users
Resolution
Ensure the list of allowed domains contains all the origins/referrer domains used by your application. You can follow the steps below:
Open the network logs in the browser
Go to a page in your app that triggers an event, and subsequently the 403 response
Open the request that is getting the 403 in the network tab
Under "Request" headers find the Referrer header
Add the domain of the referrer header to your list of "Allowed Domains" in the Sentry Web UI project settings