diff -r 7b1b88e27a20 -r 48c4eec2b7e6 wp/wp-includes/sitemaps/class-wp-sitemaps-renderer.php
--- a/wp/wp-includes/sitemaps/class-wp-sitemaps-renderer.php	Thu Sep 29 08:06:27 2022 +0200
+++ b/wp/wp-includes/sitemaps/class-wp-sitemaps-renderer.php	Fri Sep 05 18:40:08 2025 +0200
@@ -14,6 +14,7 @@
  *
  * @since 5.5.0
  */
+#[AllowDynamicProperties]
 class WP_Sitemaps_Renderer {
 	/**
 	 * XSL stylesheet for styling a sitemap for web browsers.
@@ -122,7 +123,7 @@
 	 * @param array $sitemaps Array of sitemap URLs.
 	 */
 	public function render_index( $sitemaps ) {
-		header( 'Content-type: application/xml; charset=UTF-8' );
+		header( 'Content-Type: application/xml; charset=UTF-8' );
 
 		$this->check_for_simple_xml_availability();
 
@@ -130,7 +131,6 @@
 
 		if ( ! empty( $index_xml ) ) {
 			// All output is escaped within get_sitemap_index_xml().
-			// phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
 			echo $index_xml;
 		}
 	}
@@ -187,7 +187,7 @@
 	 * @param array $url_list Array of URLs for a sitemap.
 	 */
 	public function render_sitemap( $url_list ) {
-		header( 'Content-type: application/xml; charset=UTF-8' );
+		header( 'Content-Type: application/xml; charset=UTF-8' );
 
 		$this->check_for_simple_xml_availability();
 
@@ -195,7 +195,6 @@
 
 		if ( ! empty( $sitemap_xml ) ) {
 			// All output is escaped within get_sitemap_xml().
-			// phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
 			echo $sitemap_xml;
 		}
 	}