Index: branches/4.4/src/wp-includes/cache.php
===================================================================
--- branches/4.4/src/wp-includes/cache.php	(revision 35775)
+++ branches/4.4/src/wp-includes/cache.php	(revision 47653)
@@ -692,5 +692,5 @@
 		echo '<ul>';
 		foreach ($this->cache as $group => $cache) {
-			echo "<li><strong>Group:</strong> $group - ( " . number_format( strlen( serialize( $cache ) ) / KB_IN_BYTES, 2 ) . 'k )</li>';
+			echo '<li><strong>Group:</strong> ' . esc_html( $group ) . ' - ( ' . number_format( strlen( serialize( $cache ) ) / KB_IN_BYTES, 2 ) . 'k )</li>';
 		}
 		echo '</ul>';