diff --git a/egbim/lib/common.lib.php b/egbim/lib/common.lib.php
index 6a22030..9c480b3 100644
--- a/egbim/lib/common.lib.php
+++ b/egbim/lib/common.lib.php
@@ -660,8 +660,19 @@ function html_purifier($html)
     include_once(G5_PLUGIN_PATH . '/htmlpurifier/extend.video.php');
 
     $config = HTMLPurifier_Config::createDefault();
+    // data/cache 가 없거나 쓰기 불가한 환경에서도 FAQ 출력이 깨지지 않도록 캐시 경로를 보장한다.
+    $serializer_path = G5_DATA_PATH . '/cache';
+    if (!is_dir($serializer_path)) {
+        @mkdir($serializer_path, 0755, true);
+    }
+    if (!is_dir($serializer_path) || !is_writable($serializer_path)) {
+        $serializer_path = rtrim(sys_get_temp_dir(), DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR . 'egbim_htmlpurifier_cache';
+        if (!is_dir($serializer_path)) {
+            @mkdir($serializer_path, 0755, true);
+        }
+    }
     // data/cache 디렉토리에 CSS, HTML, URI 디렉토리 등을 만든다.
-    $config->set('Cache.SerializerPath', G5_DATA_PATH . '/cache');
+    $config->set('Cache.SerializerPath', $serializer_path);
     $config->set('HTML.SafeEmbed', false);
     $config->set('HTML.SafeObject', false);
     $config->set('Output.FlashCompat', false);