diff --git a/wp-includes/feed.php b/wp-includes/feed.php
index d01fba7c8b..7b4046b22a 100644
--- a/wp-includes/feed.php
+++ b/wp-includes/feed.php
@@ -587,7 +587,7 @@ function prep_atom_text_construct( $data ) {
 function atom_site_icon() {
 	$url = get_site_icon_url( 32 );
 	if ( $url ) {
-		echo "<icon>$url</icon>\n";
+		echo '<icon>' . convert_chars( $url ) . "</icon>\n";
 	}
 }
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 6f668f4937..419523cb78 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.3-alpha-45752';
+$wp_version = '5.3-alpha-45753';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.