How do I implement a CORS filter in Spring Security?

I am creating an Angular app, which makes use of a Spring Boot backend. I am using Spring Security to secure my REST API.

When I send my login credentials to my backend, my browser console logs the following error message:

login:1 Access to XMLHttpRequest at 'http://localhost:8080/v1/auth/login' from origin 'http://localhost:4200' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.

From what I know, my backend, which is running on localhost:8080, does not allow a request coming from a different domain. I found this tutorial online, and have added the described bean to my security configuration:

  @Bean
  CorsConfigurationSource corsConfigurationSource() {
    CorsConfiguration configuration = new CorsConfiguration();
    configuration.setAllowedOrigins(List.of("http://localhost:4200"));
    configuration.setAllowedMethods(List.of("GET", "PUT", "POST", "DELETE"));
    UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
    source.registerCorsConfiguration("/**", configuration);
    return source;
  }

I have, furthermore, added http.cors() to the configure(HttpSecurity http) method of the WebSecurityConfigurerAdapter, which my security configuration extends.

I was thinking this configuration would solve my problem, but nothing has changed. Can somebody help me out?