diff --git a/wp-includes/link-template.php b/wp-includes/link-template.php
index 59bc5d2fc1..28c65c8d0a 100644
--- a/wp-includes/link-template.php
+++ b/wp-includes/link-template.php
@@ -3024,7 +3024,7 @@ function _navigation_markup( $links, $css_class = 'posts-navigation', $screen_re
 	 */
 	$template = apply_filters( 'navigation_markup_template', $template, $css_class );
 
-	return sprintf( $template, sanitize_html_class( $css_class ), esc_html( $screen_reader_text ), $links, esc_html( $aria_label ) );
+	return sprintf( $template, sanitize_html_class( $css_class ), esc_html( $screen_reader_text ), $links, esc_attr( $aria_label ) );
 }
 
 /**
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 1bffcbb766..5f061e4ac9 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.3-alpha-55862';
+$wp_version = '6.3-alpha-55863';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.