I’m building a client application that uploads directly to spaces with a presigned URL. It gets a presigned putObject URL to upload the file. I can manually send the PUT request from cURL, which succeeds, but in the browser it rejects the PUT response for not having an access-control-allow-origin header set.

My cors configuration is set to
AllowedOrigins: *
AllowedMethods: GET, PUT
AllowedHeaders: *

Is there something I’m missing to have Spaces respond with the access-control-allow-origin header? Or is it not possible?