diff --git a/README.md b/README.md
index d8cc932..d3de1e7 100644
--- a/README.md
+++ b/README.md
@@ -1 +1 @@
-# Tech-Post_BE.
\ No newline at end of file
+# Tech-Post_BE..
\ No newline at end of file
diff --git a/src/main/java/com/ureka/techpost/domain/auth/handler/OAuth2LoginSuccessHandler.java b/src/main/java/com/ureka/techpost/domain/auth/handler/OAuth2LoginSuccessHandler.java
index 7e46c61..3217b79 100644
--- a/src/main/java/com/ureka/techpost/domain/auth/handler/OAuth2LoginSuccessHandler.java
+++ b/src/main/java/com/ureka/techpost/domain/auth/handler/OAuth2LoginSuccessHandler.java
@@ -52,7 +52,7 @@ public void onAuthenticationSuccess(HttpServletRequest request, HttpServletRespo
         
         // 액세스 토큰을 쿼리 파라미터에 담아 프론트엔드 URL로 리다이렉트
 		// vue.js 에서 지원하는 포트 번호로 변경해야 함
-        String targetUrl = UriComponentsBuilder.fromUriString("http://localhost:5173/")
+        String targetUrl = UriComponentsBuilder.fromUriString("http://localhost:3000/post/list")
                 .queryParam("accessToken", access)
                 .build().toUriString();
                 
diff --git a/src/main/java/com/ureka/techpost/domain/chat/controller/StompController.java b/src/main/java/com/ureka/techpost/domain/chat/controller/StompController.java
index 8534674..6df66ed 100644
--- a/src/main/java/com/ureka/techpost/domain/chat/controller/StompController.java
+++ b/src/main/java/com/ureka/techpost/domain/chat/controller/StompController.java
@@ -17,7 +17,9 @@
 import org.springframework.messaging.handler.annotation.DestinationVariable;
 import org.springframework.messaging.handler.annotation.MessageMapping;
 import org.springframework.messaging.handler.annotation.Payload;
+import org.springframework.messaging.simp.SimpMessageHeaderAccessor;
 import org.springframework.messaging.simp.SimpMessageSendingOperations;
+import org.springframework.security.core.Authentication;
 import org.springframework.security.core.annotation.AuthenticationPrincipal;
 import org.springframework.stereotype.Controller;
 
@@ -29,8 +31,9 @@ public class StompController {
     private final ChatService chatService;
 
     @MessageMapping("/{roomId}")
-    public void sendMessage(@DestinationVariable Long roomId, @AuthenticationPrincipal CustomUserDetails userDetails, @Payload @Valid ChatMessageReq chatMessageReq) {
-      Long userId = userDetails.getUser().getUserId();
+    public void sendMessage(@DestinationVariable Long roomId, SimpMessageHeaderAccessor accessor, @Payload @Valid ChatMessageReq chatMessageReq) {
+      CustomUserDetails customUserDetails = (CustomUserDetails) accessor.getSessionAttributes().get("user");
+      Long userId = customUserDetails.getUser().getUserId();
 
       chatService.saveMessage(roomId, userId, chatMessageReq);
       messageTemplate.convertAndSend("/topic/" + roomId, chatMessageReq);
diff --git a/src/main/java/com/ureka/techpost/global/config/SecurityConfig.java b/src/main/java/com/ureka/techpost/global/config/SecurityConfig.java
index acdf7be..5e895d5 100644
--- a/src/main/java/com/ureka/techpost/global/config/SecurityConfig.java
+++ b/src/main/java/com/ureka/techpost/global/config/SecurityConfig.java
@@ -56,7 +56,7 @@ public AuthenticationManager authenticationManager(AuthenticationConfiguration c
     @Bean
     public CorsConfigurationSource corsConfigurationSource() {
         CorsConfiguration configuration = new CorsConfiguration();
-        configuration.setAllowedOrigins(Collections.singletonList("http://localhost:5173"));
+        configuration.setAllowedOrigins(Arrays.asList("http://localhost:3000"));
         configuration.setAllowedMethods(Arrays.asList("GET", "POST", "PUT", "DELETE", "OPTIONS"));
         configuration.setAllowedHeaders(Collections.singletonList("*"));
         configuration.setAllowCredentials(true);
diff --git a/src/main/java/com/ureka/techpost/global/config/websocket/StompChannelInterceptor.java b/src/main/java/com/ureka/techpost/global/config/websocket/StompChannelInterceptor.java
index d349da1..2b572f3 100644
--- a/src/main/java/com/ureka/techpost/global/config/websocket/StompChannelInterceptor.java
+++ b/src/main/java/com/ureka/techpost/global/config/websocket/StompChannelInterceptor.java
@@ -23,6 +23,7 @@
 import org.springframework.messaging.support.ChannelInterceptor;
 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
 import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContextHolder;
 import org.springframework.stereotype.Component;
 
 // STOMP jwt 인증 처리
@@ -67,6 +68,7 @@ public Message<?> preSend(Message<?> message, MessageChannel channel) {
             Authentication authentication = new UsernamePasswordAuthenticationToken(userDetails, null, userDetails.getAuthorities());
 
             accessor.setUser(authentication);
+            accessor.getSessionAttributes().put("user", userDetails);
 
         }