--- a/wp/wp-includes/blocks/post-date.php	Wed Sep 21 18:19:35 2022 +0200
+++ b/wp/wp-includes/blocks/post-date.php	Tue Sep 27 16:37:53 2022 +0200
@@ -21,7 +21,7 @@
 	$post_ID            = $block->context['postId'];
 	$align_class_name   = empty( $attributes['textAlign'] ) ? '' : "has-text-align-{$attributes['textAlign']}";
 	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $align_class_name ) );
-	$formatted_date     = get_the_date( isset( $attributes['format'] ) ? $attributes['format'] : '', $post_ID );
+	$formatted_date     = get_the_date( empty( $attributes['format'] ) ? '' : $attributes['format'], $post_ID );
 	if ( isset( $attributes['isLink'] ) && $attributes['isLink'] ) {
 		$formatted_date = sprintf( '<a href="%1s">%2s</a>', get_the_permalink( $post_ID ), $formatted_date );
 	}
@@ -29,7 +29,7 @@
 	return sprintf(
 		'<div %1$s><time datetime="%2$s">%3$s</time></div>',
 		$wrapper_attributes,
-		get_the_date( 'c', $post_ID ),
+		esc_attr( get_the_date( 'c', $post_ID ) ),
 		$formatted_date
 	);
 }