diff --git a/lib/common.lib.php b/lib/common.lib.php
index 6a6a6980f..ad6ceda74 100644
--- a/lib/common.lib.php
+++ b/lib/common.lib.php
@@ -3076,6 +3076,9 @@ function get_search_string($stx)
 // XSS 관련 태그 제거
 function clean_xss_tags($str, $check_entities=0, $is_remove_tags=0, $cur_str_len=0)
 {
+    // space, tab('\t'), formfeed('\f'), vertical tab('\v'), newline('\n'), carriage return('\r') 를 제거한다.
+    $str = preg_replace('#[[:space:]]#', '', $str);
+
     if( $is_remove_tags ){
         $str = strip_tags($str);
     }