From 08551a0482b2dc5cefa279f6fa91dd717256d1a2 Mon Sep 17 00:00:00 2001
From: dasosann <goodtony0403@gmail.com>
Date: Fri, 29 May 2026 13:55:11 +0900
Subject: [PATCH 1/2] =?UTF-8?q?feat:=20=ED=9E=88=EC=8A=A4=ED=86=A0?=
 =?UTF-8?q?=EB=A6=AC=20=EB=82=B4=EC=97=AD=EC=9D=84=20=ED=86=B5=ED=95=9C=20?=
 =?UTF-8?q?=EB=92=A4=EB=A1=9C=EA=B0=80=EA=B8=B0=20=EB=B6=84=EA=B8=B0=20?=
 =?UTF-8?q?=EC=B2=98=EB=A6=AC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../album/4cut/components/ScreenAlbum4Cut.tsx       | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/feature/album/4cut/components/ScreenAlbum4Cut.tsx b/src/feature/album/4cut/components/ScreenAlbum4Cut.tsx
index d42762e7..c0a6c34d 100644
--- a/src/feature/album/4cut/components/ScreenAlbum4Cut.tsx
+++ b/src/feature/album/4cut/components/ScreenAlbum4Cut.tsx
@@ -20,6 +20,7 @@ import { useQueryClient } from '@tanstack/react-query';
 import { Download, Loader2, LucideIcon, Menu, Send } from 'lucide-react';
 import dynamic from 'next/dynamic';
 import Link from 'next/link';
+import { useRouter } from 'next/navigation';
 import { useEffect, useRef, useState } from 'react';
 import { useGetAlbumInfo } from '../../detail/hooks/useGetAlbumInfo';
 import { use4CutAiSummary } from '../hooks/use4CutAiSummary';
@@ -37,11 +38,22 @@ interface ScreenAlbum4CutProps {
 }
 
 export default function ScreenAlbum4Cut({ albumId }: ScreenAlbum4CutProps) {
+  const router = useRouter();
   const queryClient = useQueryClient();
   const [isCaptureVisible, setIsCaptureVisible] = useState(false);
   const [isDownloading, setIsDownloading] = useState(false);
   const [showExplanation, setShowExplanation] = useState(false);
   const captureRef = useRef<HTMLDivElement>(null);
+
+  const handleBackClick = () => {
+    if (typeof window === 'undefined') return;
+    const isNewTab = window.history.length <= 1 || !document.referrer;
+    if (isNewTab) {
+      router.push('/main');
+    } else {
+      router.back();
+    }
+  };
   const { data } = useGetAlbumInfo(albumId);
   const { data: albumInformData } = useGetAlbumInform({ code: albumId });
   const { data: { name } = {} } = useGetUserMe();
@@ -201,6 +213,7 @@ export default function ScreenAlbum4Cut({ albumId }: ScreenAlbum4CutProps) {
     <>
       <CustomHeader
         isShowBack
+        onBackClick={handleBackClick}
         title={data?.title ?? ''}
         rightContent={
           <div className='flex gap-4'>

From 0777045b6fa0bbf1b80c12b7c476d529224abfce Mon Sep 17 00:00:00 2001
From: dasosann <goodtony0403@gmail.com>
Date: Fri, 29 May 2026 14:00:37 +0900
Subject: [PATCH 2/2] =?UTF-8?q?feat:=20=EC=BD=94=EB=93=9C=EB=A6=AC?=
 =?UTF-8?q?=EB=B7=B0=20=EB=B0=98=EC=98=81?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../album/4cut/components/ScreenAlbum4Cut.tsx      | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/feature/album/4cut/components/ScreenAlbum4Cut.tsx b/src/feature/album/4cut/components/ScreenAlbum4Cut.tsx
index c0a6c34d..a83179cf 100644
--- a/src/feature/album/4cut/components/ScreenAlbum4Cut.tsx
+++ b/src/feature/album/4cut/components/ScreenAlbum4Cut.tsx
@@ -47,8 +47,20 @@ export default function ScreenAlbum4Cut({ albumId }: ScreenAlbum4CutProps) {
 
   const handleBackClick = () => {
     if (typeof window === 'undefined') return;
+    // 공유 링크 등 외부 유입 시 외부 사이트로 되돌아가는 것을 방지합니다.
     const isNewTab = window.history.length <= 1 || !document.referrer;
-    if (isNewTab) {
+    // referrer가 우리 서비스 origin일 때만 안전한 내부 이동으로 봅니다.
+    const isInternalReferrer = (() => {
+      if (!document.referrer) return false;
+      try {
+        return new URL(document.referrer).origin === window.location.origin;
+      } catch {
+        return false;
+      }
+    })();
+
+    if (isNewTab || !isInternalReferrer) {
+      // 히스토리/리퍼러가 신뢰되지 않으면 안전한 내부 경로로 보냅니다.
       router.push('/main');
     } else {
       router.back();