diff --git a/participation-service/src/main/java/com/kt/event/participation/infrastructure/config/SecurityConfig.java b/participation-service/src/main/java/com/kt/event/participation/infrastructure/config/SecurityConfig.java
index ff51aed..f11e549 100644
--- a/participation-service/src/main/java/com/kt/event/participation/infrastructure/config/SecurityConfig.java
+++ b/participation-service/src/main/java/com/kt/event/participation/infrastructure/config/SecurityConfig.java
@@ -24,7 +24,7 @@ import java.util.Arrays;
 @EnableWebSecurity
 public class SecurityConfig {
 
-    @Value("${cors.allowed-origins:*")
+    @Value("${cors.allowed-origins:*}")
     private String allowedOrigins;
 
     @Bean
diff --git a/participation-service/src/main/resources/application.yml b/participation-service/src/main/resources/application.yml
index 2f35890..7ad3c96 100644
--- a/participation-service/src/main/resources/application.yml
+++ b/participation-service/src/main/resources/application.yml
@@ -56,7 +56,7 @@ jwt:
 
 # CORS 설정
 cors:
-  allowed-origins: ${CORS_ALLOWED_ORIGINS:http://localhost:8081,http://localhost:8082,http://localhost:8083,http://localhost:8084,http://kt-event-marketing.20.214.196.128.nip.io}
+  allowed-origins: ${CORS_ALLOWED_ORIGINS:http://localhost:3000,http://localhost:8081,http://localhost:8082,http://localhost:8083,http://localhost:8084,http://kt-event-marketing.20.214.196.128.nip.io}
   allowed-methods: ${CORS_ALLOWED_METHODS:GET,POST,PUT,DELETE,OPTIONS,PATCH}
   allowed-headers: ${CORS_ALLOWED_HEADERS:*}
   allow-credentials: ${CORS_ALLOW_CREDENTIALS:true}