diff --git a/src/main/java/com/example/eatmate/global/auth/login/oauth/OAuthLoginSuccessHandler.java b/src/main/java/com/example/eatmate/global/auth/login/oauth/OAuthLoginSuccessHandler.java
index 6cad806..98e93ca 100644
--- a/src/main/java/com/example/eatmate/global/auth/login/oauth/OAuthLoginSuccessHandler.java
+++ b/src/main/java/com/example/eatmate/global/auth/login/oauth/OAuthLoginSuccessHandler.java
@@ -10,7 +10,6 @@
 import com.example.eatmate.global.auth.jwt.JwtService;
 
 import jakarta.servlet.ServletException;
-import jakarta.servlet.http.Cookie;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import lombok.RequiredArgsConstructor;
@@ -54,40 +53,33 @@ public void onAuthenticationSuccess(HttpServletRequest request, HttpServletRespo
 
 	// 쿠키 설정 메소드 생성
 	private void setTokensInCookie(HttpServletResponse response, String accessToken, String refreshToken) {
-
 		// Access Token 쿠키 설정
-		Cookie accessTokenCookie = new Cookie("AccessToken", accessToken);
-		accessTokenCookie.setHttpOnly(COOKIE_HTTP_ONLY);
-		accessTokenCookie.setSecure(COOKIE_SECURE);
-		accessTokenCookie.setPath(COOKIE_PATH);
-		accessTokenCookie.setMaxAge(ACCESS_TOKEN_MAX_AGE);
-
-		// Refresh Token 쿠키 설정 (필요 시)
-		Cookie refreshTokenCookie = null;
-		if (refreshToken != null) {
-			refreshTokenCookie = new Cookie("RefreshToken", refreshToken);
-			refreshTokenCookie.setHttpOnly(COOKIE_HTTP_ONLY);
-			refreshTokenCookie.setSecure(COOKIE_SECURE);
-			refreshTokenCookie.setPath(COOKIE_PATH);
-			refreshTokenCookie.setMaxAge(REFRESH_TOKEN_MAX_AGE);
-		}
+		String accessTokenCookieString = String.format("AccessToken=%s; " +
+				"Path=%s; " +
+				"Max-Age=%d; " +
+				"HttpOnly; " +
+				"Secure; " +
+				"SameSite=None",
+			accessToken,
+			COOKIE_PATH,
+			ACCESS_TOKEN_MAX_AGE);
 
-		// SameSite 설정
-		response.addHeader("Set-Cookie", "AccessToken=" + accessToken +
-			"; HttpOnly; Secure=" + COOKIE_SECURE + "; SameSite=None; Path=" + COOKIE_PATH + "; Max-Age="
-			+ ACCESS_TOKEN_MAX_AGE);
+		response.addHeader("Set-Cookie", accessTokenCookieString);
 
+		// Refresh Token 쿠키 설정
 		if (refreshToken != null) {
-			response.addHeader("Set-Cookie", "RefreshToken=" + refreshToken +
-				"; HttpOnly; Secure=" + COOKIE_SECURE + "; SameSite=None; Path=" + COOKIE_PATH + "; Max-Age="
-				+ REFRESH_TOKEN_MAX_AGE);
-		}
-		// 응답에 쿠키 추가
-		response.addCookie(accessTokenCookie);
-		if (refreshTokenCookie != null) {
-			response.addCookie(refreshTokenCookie);
-		}
+			String refreshTokenCookieString = String.format("RefreshToken=%s; " +
+					"Path=%s; " +
+					"Max-Age=%d; " +
+					"HttpOnly; " +
+					"Secure; " +
+					"SameSite=None",
+				refreshToken,
+				COOKIE_PATH,
+				REFRESH_TOKEN_MAX_AGE);
 
+			response.addHeader("Set-Cookie", refreshTokenCookieString);
+		}
 	}
 
 	// 로그용 (삭제해도 ok)
diff --git a/src/main/java/com/example/eatmate/global/config/SecurityConfig.java b/src/main/java/com/example/eatmate/global/config/SecurityConfig.java
index 36ff92c..27d322e 100644
--- a/src/main/java/com/example/eatmate/global/config/SecurityConfig.java
+++ b/src/main/java/com/example/eatmate/global/config/SecurityConfig.java
@@ -75,9 +75,10 @@ public CorsConfigurationSource corsConfigurationSource() {
 		CorsConfiguration configuration = new CorsConfiguration();
 
 		configuration.setAllowedOrigins(Arrays.asList(
-			"http://localhost:3000",
+			"http://localhost:3000/",
 			"https://develop.d4u0qurydeei4.amplifyapp.com"
 		));
+		configuration.addAllowedOriginPattern("*");
 		configuration.setAllowedMethods(Arrays.asList("GET", "POST", "PATCH", "DELETE", "OPTIONS"));
 		configuration.setAllowedHeaders(Arrays.asList("Content-Type", "Authorization", "Cookie"));
 		configuration.setExposedHeaders(