I am using Spring MVC to create a service and Spring WebFlux to use WebClient. How can I propagate SecurityContext inside WebClient to access the login user that was set with SecurityContextHolder?

My configuration

<dependencies>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
  </dependency>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-webflux</artifactId>
  </dependency>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-security</artifactId>
  </dependency>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
  </dependency>
  <dependency>
    <groupId>io.micrometer</groupId>
    <artifactId>micrometer-tracing-bridge-otel</artifactId>
  </dependency>

  <dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <optional>true</optional>
  </dependency>
</dependencies>

Application properties

spring.reactor.context-propagation=auto

Setting user in SecurityContextHolder

SecurityContext context = SecurityContextHolder.createEmptyContext();
User user = new User("User", "", true, true, true, true, List.of());
Authentication authentication = new UsernamePasswordAuthenticationToken(user, "", List.of());
context.setAuthentication(authentication);
SecurityContextHolder.setContext(context);

Creating WebClient, where I would like to set Authorization header taken from login User class.

public WebClient webClient(WebClient.Builder webClientBuilder) {
  WebClient webClient = webClientBuilder
      .filter(securityExchangeFilter)  // setting Authorization header
      .build();
}