diff --git a/wp-includes/default-widgets.php b/wp-includes/default-widgets.php
index d54dbc732c..1c68ce393a 100644
--- a/wp-includes/default-widgets.php
+++ b/wp-includes/default-widgets.php
@@ -1354,7 +1354,7 @@ class WP_Widget_Tag_Cloud extends WP_Widget {
 		?>
 		<p>
 			<label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title:') ?></label>
-			<input type="text" class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" value="<?php echo $title; ?>" />
+			<input type="text" class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" value="<?php echo esc_attr( $title ); ?>" />
 		</p>
 		<p>
 			<label for="<?php echo $this->get_field_id('nav_menu'); ?>"><?php _e('Select Menu:'); ?></label>