diff --git a/wp-includes/blocks/rss.php b/wp-includes/blocks/rss.php
index 4d6bb428a4..b5fe3abaf5 100644
--- a/wp-includes/blocks/rss.php
+++ b/wp-includes/blocks/rss.php
@@ -80,7 +80,7 @@ function render_block_core_rss( $attributes ) {
 	}
 
 	$classes           = 'grid' === $attributes['blockLayout'] ? ' is-grid columns-' . $attributes['columns'] : '';
-	$list_items_markup = sprintf( "<ul class='%s'>%s</ul>", esc_attr( 'wp-block-rss' . $classes ), $list_items );
+	$list_items_markup = "<ul class='wp-block-rss{$classes}'>{$list_items}</ul>";
 
 	// PHP 5.2 compatibility. See: http://simplepie.org/wiki/faq/i_m_getting_memory_leaks.
 	$rss->__destruct();
@@ -93,8 +93,7 @@ function render_block_core_rss( $attributes ) {
  * Registers the `core/rss` block on server.
  */
 function register_block_core_rss() {
-	register_block_type(
-		'core/rss',
+	register_block_type( 'core/rss',
 		array(
 			'attributes'      => array(
 				'columns'        => array(
diff --git a/wp-includes/blocks/search.php b/wp-includes/blocks/search.php
index f9bbe3eba5..ac7da463e9 100644
--- a/wp-includes/blocks/search.php
+++ b/wp-includes/blocks/search.php
@@ -46,7 +46,7 @@ function render_block_core_search( $attributes ) {
 
 	return sprintf(
 		'<form class="%s" role="search" method="get" action="%s">%s</form>',
-		esc_attr( $class ),
+		$class,
 		esc_url( home_url( '/' ) ),
 		$label_markup . $input_markup . $button_markup
 	);
diff --git a/wp-includes/version.php b/wp-includes/version.php
index a1963f0a24..5f818103b9 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.2.5';
+$wp_version = '5.2.6';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.