If any CORS policy is injected into your backend project, you can put your frontend URL in this configuration. We have shared an example of how to add CORS to our project. I hope this solution is okay. If not, please let us know.

builder.Services.AddCors(options =>
{
    options.AddPolicy(name: MyAllowSpecificOrigins,
                      builder =>
                      {
                          builder.WithOrigins("http://localhost:5173"); // You can add value in configuration file
                      });
});