Index: branches/5.2.x/core/units/categories/categories_event_handler.php
===================================================================
diff -u -N -r16713 -r16781
--- branches/5.2.x/core/units/categories/categories_event_handler.php	(.../categories_event_handler.php)	(revision 16713)
+++ branches/5.2.x/core/units/categories/categories_event_handler.php	(.../categories_event_handler.php)	(revision 16781)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: categories_event_handler.php 16713 2022-07-19 11:00:49Z alex $
+* @version	$Id: categories_event_handler.php 16781 2024-01-04 10:58:30Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -1615,7 +1615,7 @@
 				$page_var = $event->getEventParam('page_var');
 
 				if ( $page_var !== false ) {
-					$page = $this->Application->GetVar($page_var);
+					$page = $this->Application->GetVarFiltered($page_var, false, FILTER_VALIDATE_INT);
 
 					if ( is_numeric($page) ) {
 						/** @var kDBList $object */