try this

[
{
    "AllowedHeaders": ["*"],
    "AllowedMethods": ["GET", "HEAD"],
    "AllowedOrigins": ["*"],
    "ExposeHeaders": ["Content-Type", "Content-Length", "ETag"],
    "MaxAgeSeconds": 3000
}

]

or use a proxy server if still its not working i.e fetch to node server then use in front-end