diff --git a/gulliver/methods/controls/calendar.php b/gulliver/methods/controls/calendar.php
index 66e21204b..28d2286d7 100755
--- a/gulliver/methods/controls/calendar.php
+++ b/gulliver/methods/controls/calendar.php
@@ -25,6 +25,9 @@
 	td {font-family: Tahoma, Verdana, sans-serif; font-size: 11px;}
 </style>
 <?php
+    G::LoadSystem('inputfilter');
+    $filter = new InputFilter();
+    $_GET = $filter->xssFilterHard($_GET);
 
 	$ARR_MONTHS = array ( "January", "February", "March", "April", "May", "June",
 		"July", "August", "September", "October", "November", "December");
@@ -108,6 +111,11 @@
 	  $end_date = mktime ( 0,0,0, $dt_currentMonth+1, + $i, $dt_currentYear ) ;
   }
   $numWeeks = ( $end_date - $start_date )/3600/24/7 ;
+  
+  $dtmin_value = $filter->xssFilterHard($dtmin_value);
+  $dtmax_value = $filter->xssFilterHard($dtmax_value);
+  $dt_currentYear = $filter->xssFilterHard($dt_currentYear);
+  $dt_currentMonth = $filter->xssFilterHard($dt_currentMonth);
 
 //print date('Y-m-d', $start_date ) . " $dtmin_value $dtmax_value ";
 ?>
diff --git a/workflow/engine/controllers/adminProxy.php b/workflow/engine/controllers/adminProxy.php
index ac8f10492..33a7965a9 100644
--- a/workflow/engine/controllers/adminProxy.php
+++ b/workflow/engine/controllers/adminProxy.php
@@ -1009,6 +1009,12 @@ class adminProxy extends HttpProxyController
     public function uploadImage()
     {
         //!dataSystem
+        
+        G::LoadSystem('inputfilter');
+        $filter = new InputFilter();
+        $_SERVER["REQUEST_URI"] = $filter->xssFilterHard($_SERVER["REQUEST_URI"]);
+        $_FILES = $filter->xssFilterHard($_FILES);
+        
         $ainfoSite = explode("/", $_SERVER["REQUEST_URI"]);
         $dir       = PATH_DATA."sites".PATH_SEP.str_replace("sys","",$ainfoSite[1]).PATH_SEP."files/logos";
         global $_FILES;
@@ -1035,8 +1041,10 @@ class adminProxy extends HttpProxyController
 
         $uploaded = 0;
         $failed   = 0;
+        
+        $files_img_type = $filter->xssFilterHard($_FILES['img']['type']);
 
-        if (in_array($_FILES['img']['type'], $allowedType)) {
+        if (in_array($files_img_type, $allowedType)) {
              // max upload file is 500 KB
             if ($_FILES['img']['size'] <= 500000) {
                 $formf     = $_FILES['img'];
@@ -1055,7 +1063,7 @@ class adminProxy extends HttpProxyController
                         $arrayInfo = getimagesize($dir . '/' . 'tmp' . $fileName);
                         $typeMime  = $arrayInfo[2];
                     }
-                    if ($typeMime == $allowedTypeArray['index' . base64_encode($_FILES['img']['type'])]) {
+                    if ($typeMime == $allowedTypeArray['index' . base64_encode($files_img_type)]) {
                         $error = false;
                         try {
                             list($imageWidth, $imageHeight, $imageType) = @getimagesize($dir . '/' . 'tmp' . $fileName);
@@ -1075,10 +1083,10 @@ class adminProxy extends HttpProxyController
             } else {
                 $failed = "2";
             }
-        } elseif ($_FILES['img']['type'] != '') {
+        } elseif ($files_img_type != '') {
             $failed = "1";
         }
-        echo '{success: true, failed: ' . $failed . ', uploaded: ' . $uploaded . ', type: "' . $_FILES['img']['type'] . '"}';
+        echo '{success: true, failed: ' . $failed . ', uploaded: ' . $uploaded . ', type: "' . $files_img_type . '"}';
         exit();
     }
 
diff --git a/workflow/engine/methods/cases/ajaxListener.php b/workflow/engine/methods/cases/ajaxListener.php
index 70667863a..8c7b90c2c 100755
--- a/workflow/engine/methods/cases/ajaxListener.php
+++ b/workflow/engine/methods/cases/ajaxListener.php
@@ -33,6 +33,12 @@
 //require_once 'classes/model/AppDelay.php';
 //require_once 'classes/model/Process.php';
 //require_once 'classes/model/Task.php';
+
+G::LoadSystem('inputfilter');
+$filter = new InputFilter();
+$_REQUEST = $filter->xssFilterHard($_REQUEST);
+$_POST = $filter->xssFilterHard($_POST);
+
 if(isset($_REQUEST['action']) && $_REQUEST['action'] == "verifySession" ) {
     if (!isset($_SESSION['USER_LOGGED'])) {
         $response = new stdclass();
diff --git a/workflow/engine/methods/cases/casesHistoryDynaformPage_Ajax.php b/workflow/engine/methods/cases/casesHistoryDynaformPage_Ajax.php
index a70177abc..bdd7d0430 100644
--- a/workflow/engine/methods/cases/casesHistoryDynaformPage_Ajax.php
+++ b/workflow/engine/methods/cases/casesHistoryDynaformPage_Ajax.php
@@ -21,6 +21,13 @@
  * For more information, contact Colosa Inc, 2566 Le Jeune Rd.,
  * Coral Gables, FL, 33134, USA, or email info@colosa.com.
  */
+ 
+G::LoadSystem('inputfilter');
+$filter = new InputFilter();
+$_GET = $filter->xssFilterHard($_GET);
+$_POST = $filter->xssFilterHard($_POST);
+$_REQUEST = $filter->xssFilterHard($_REQUEST);
+$_SESSION = $filter->xssFilterHard($_SESSION); 
 
 $actionAjax = isset( $_REQUEST['actionAjax'] ) ? $_REQUEST['actionAjax'] : null;
 
diff --git a/workflow/engine/methods/cases/cases_Ajax.php b/workflow/engine/methods/cases/cases_Ajax.php
index 75b16b9f2..57a5fbb7e 100755
--- a/workflow/engine/methods/cases/cases_Ajax.php
+++ b/workflow/engine/methods/cases/cases_Ajax.php
@@ -1,4 +1,11 @@
 <?php
+G::LoadSystem('inputfilter');
+$filter = new InputFilter();
+$_GET = $filter->xssFilterHard($_GET);
+$_POST = $filter->xssFilterHard($_POST);
+$_REQUEST = $filter->xssFilterHard($_REQUEST);
+$_SESSION = $filter->xssFilterHard($_SESSION);
+
 if (!isset($_SESSION['USER_LOGGED'])) {
     $response = new stdclass();
     $response->message = G::LoadTranslation('ID_LOGIN_AGAIN');
@@ -243,12 +250,16 @@ switch (($_POST['action']) ? $_POST['action'] : $_REQUEST['action']) {
         G::RenderPage( 'publish', 'raw' );
         break;
     case 'showUsers':
+        $_POST['TAS_ASSIGN_TYPE'] = $filter->xssFilterHard($_POST['TAS_ASSIGN_TYPE']);
         switch ($_POST['TAS_ASSIGN_TYPE']) {
             // switch verify $_POST['TAS_ASSIGN_TYPE']
             case 'BALANCED':
+                $_POST['USR_UID'] = $filter->xssFilterHard($_POST['USR_UID']);
                 G::LoadClass( 'user' );
                 $oUser = new User( new DBConnection() );
                 $oUser->load( $_POST['USR_UID'] );
+                $oUser->Fields['USR_FIRSTNAME'] = $filter->xssFilterHard($oUser->Fields['USR_FIRSTNAME']);
+                $oUser->Fields['USR_LASTNAME'] = $filter->xssFilterHard($oUser->Fields['USR_LASTNAME']);
                 echo $oUser->Fields['USR_FIRSTNAME'] . ' ' . $oUser->Fields['USR_LASTNAME'] . '<input type="hidden" name="form[TASKS][1][USR_UID]" id="form[TASKS][1][USR_UID]" value="' . $_POST['USR_UID'] . '">';
                 break;
             case 'MANUAL':
@@ -300,6 +311,8 @@ switch (($_POST['action']) ? $_POST['action'] : $_REQUEST['action']) {
                 echo $sAux;
                 break;
             case 'EVALUATE':
+                $_POST['TAS_ASSIGN_VARIABLE'] = $filter->xssFilterHard($_POST['TAS_ASSIGN_VARIABLE']);
+                $_SESSION['APPLICATION'] = $filter->xssFilterHard($_SESSION['APPLICATION']);
                 G::LoadClass( 'application' );
                 $oApplication = new Application( new DBConnection() );
                 $oApplication->load( $_SESSION['APPLICATION'] );
@@ -315,7 +328,8 @@ switch (($_POST['action']) ? $_POST['action'] : $_REQUEST['action']) {
                     $oUser->load( $sUser );
                     echo $oUser->Fields['USR_FIRSTNAME'] . ' ' . $oUser->Fields['USR_LASTNAME'] . '<input type="hidden" name="form[TASKS][1][USR_UID]" id="form[TASKS][1][USR_UID]" value="' . $sUser . '">';
                 } else {
-                    echo '<strong>Error: </strong>' . $_POST['TAS_ASSIGN_VARIABLE'] . ' ' . G::LoadTranslation( 'ID_EMPTY' );
+                    $ID_EMPTY = $filter->xssFilterHard(G::LoadTranslation( 'ID_EMPTY' ));
+                    echo '<strong>Error: </strong>' . $_POST['TAS_ASSIGN_VARIABLE'] . ' ' . $ID_EMPTY;
                     echo '<input type="hidden" name="_ERROR_" id="_ERROR_" value="">';
                 }
                 break;
@@ -447,6 +461,9 @@ switch (($_POST['action']) ? $_POST['action'] : $_REQUEST['action']) {
         $cases->reassignCase( $_SESSION['APPLICATION'], $_SESSION['INDEX'], $_SESSION['USER_LOGGED'], $_POST['USR_UID'], $_POST['THETYPE'] );
         break;
     case 'toRevisePanel':
+        $_POST['APP_UID'] = $filter->xssFilterHard($_POST['APP_UID']);
+        $_POST['DEL_INDEX'] = $filter->xssFilterHard($_POST['DEL_INDEX']);
+
         $_GET['APP_UID'] = $_POST['APP_UID'];
         $_GET['DEL_INDEX'] = $_POST['DEL_INDEX'];
         $G_PUBLISH = new Publisher();