diff --git a/config/src/main/java/org/springframework/security/config/web/server/ServerHttpSecurity.java b/config/src/main/java/org/springframework/security/config/web/server/ServerHttpSecurity.java
index 329ece6af75..885c7ca21a7 100644
--- a/config/src/main/java/org/springframework/security/config/web/server/ServerHttpSecurity.java
+++ b/config/src/main/java/org/springframework/security/config/web/server/ServerHttpSecurity.java
@@ -4506,7 +4506,9 @@ private ReactiveOAuth2UserService<OidcUserRequest, OidcUser> getOidcUserService(
 			if (bean != null) {
 				return bean;
 			}
-			return new OidcReactiveOAuth2UserService();
+			OidcReactiveOAuth2UserService reactiveOAuth2UserService = new OidcReactiveOAuth2UserService();
+			reactiveOAuth2UserService.setOauth2UserService(getOauth2UserService());
+			return reactiveOAuth2UserService;
 		}
 
 		private ReactiveOAuth2UserService<OAuth2UserRequest, OAuth2User> getOauth2UserService() {