diff --git a/adm/config_form_update.php b/adm/config_form_update.php
index 126786382..533782c7a 100644
--- a/adm/config_form_update.php
+++ b/adm/config_form_update.php
@@ -28,6 +28,14 @@ $cf_social_servicelist = !empty($_POST['cf_social_servicelist']) ? implode(',',
 
 $_POST['cf_title'] = strip_tags($_POST['cf_title']);
 
+$check_keys = array('cf_lg_mid', 'cf_lg_mert_key', 'cf_cert_kcb_cd', 'cf_cert_kcp_cd', 'cf_editor', 'cf_recaptcha_site_key', 'cf_recaptcha_secret_key');
+
+foreach( $check_keys as $key ){
+    if ( isset($_POST[$key]) && $_POST[$key] ){
+        $_POST[$key] = preg_replace('/[^a-z0-9_\-]/i', '', $_POST[$key]);
+    }
+}
+
 $sql = " update {$g5['config_table']}
             set cf_title = '{$_POST['cf_title']}',
                 cf_admin = '{$_POST['cf_admin']}',
diff --git a/adm/menu_list_update.php b/adm/menu_list_update.php
index 324f26209..3aaf18b11 100644
--- a/adm/menu_list_update.php
+++ b/adm/menu_list_update.php
@@ -23,7 +23,7 @@ for ($i=0; $i<$count; $i++)
 
     $code    = $_POST['code'][$i];
     $me_name = $_POST['me_name'][$i];
-    $me_link = preg_match('/^javascript/i', $_POST['me_link'][$i]) ? G5_URL : strip_tags($_POST['me_link'][$i]);
+    $me_link = (preg_match('/^javascript/i', $_POST['me_link'][$i]) || preg_match('/script:/i', $_POST['me_link'][$i])) ? G5_URL : strip_tags($_POST['me_link'][$i]);
     
     if(!$code || !$me_name || !$me_link)
         continue;
diff --git a/adm/sms_admin/emoticon_move.php b/adm/sms_admin/emoticon_move.php
index 075c7b4a4..4e04cf496 100644
--- a/adm/sms_admin/emoticon_move.php
+++ b/adm/sms_admin/emoticon_move.php
@@ -12,7 +12,7 @@ $g5['title'] = '이모티콘그룹 이동';
 include_once(G5_PATH.'/head.sub.php');
 
 $list = array();    //배열 변수 초기화
-$fo_no_list = isset($_POST['fo_no']) ? implode(',', $_POST['fo_no']) : '';
+$fo_no_list = isset($_POST['fo_no']) ? clean_xss_tags(strip_tags(implode(',', $_POST['fo_no']))) : '';
 
 $sql = " select * from {$g5['sms5_form_group_table']} order by fg_no ";
 $result = sql_query($sql);
diff --git a/lib/common.lib.php b/lib/common.lib.php
index 4b2423f2c..c41b3e412 100644
--- a/lib/common.lib.php
+++ b/lib/common.lib.php
@@ -288,6 +288,7 @@ function get_file($bo_table, $wr_id)
     while ($row = sql_fetch_array($result))
     {
         $no = $row['bf_no'];
+        $bf_content = $row['bf_content'] ? html_purifier($row['bf_content']) : '';
         $file[$no]['href'] = G5_BBS_URL."/download.php?bo_table=$bo_table&amp;wr_id=$wr_id&amp;no=$no" . $qstr;
         $file[$no]['download'] = $row['bf_download'];
         // 4.00.11 - 파일 path 추가
@@ -295,8 +296,8 @@ function get_file($bo_table, $wr_id)
         $file[$no]['size'] = get_filesize($row['bf_filesize']);
         $file[$no]['datetime'] = $row['bf_datetime'];
         $file[$no]['source'] = addslashes($row['bf_source']);
-        $file[$no]['bf_content'] = $row['bf_content'];
-        $file[$no]['content'] = get_text($row['bf_content']);
+        $file[$no]['bf_content'] = $bf_content;
+        $file[$no]['content'] = get_text($bf_content);
         //$file[$no]['view'] = view_file_link($row['bf_file'], $file[$no]['content']);
         $file[$no]['view'] = view_file_link($row['bf_file'], $row['bf_width'], $row['bf_height'], $file[$no]['content']);
         $file[$no]['file'] = $row['bf_file'];
diff --git a/plugin/lgxpay/AuthOnlyReq.php b/plugin/lgxpay/AuthOnlyReq.php
index 571d7d9c9..e1eb02e9c 100644
--- a/plugin/lgxpay/AuthOnlyReq.php
+++ b/plugin/lgxpay/AuthOnlyReq.php
@@ -165,8 +165,8 @@ $_SESSION['lgd_certify'] = $payReqMap;
 <input type="hidden" name="LGD_ENCODING" value="UTF-8"/>
 <?php
 foreach ($payReqMap as $key => $value) {
-    $key = htmlspecialchars(strip_tags($key));
-    $value = htmlspecialchars(strip_tags($value));
+    $key = htmlspecialchars(strip_tags($key), ENT_QUOTES);
+    $value = htmlspecialchars(strip_tags($value), ENT_QUOTES);
     echo "<input type='hidden' name='$key' id='$key' value='$value'/>".PHP_EOL;
 }
 ?>