diff --git a/wp-includes/ID3/getid3.lib.php b/wp-includes/ID3/getid3.lib.php
index ebdc569864..3a5983fc26 100644
--- a/wp-includes/ID3/getid3.lib.php
+++ b/wp-includes/ID3/getid3.lib.php
@@ -720,12 +720,18 @@ class getid3_lib
 	 */
 	public static function XML2array($XMLstring) {
 		if (function_exists('simplexml_load_string') && function_exists('libxml_disable_entity_loader')) {
-			// http://websec.io/2012/08/27/Preventing-XEE-in-PHP.html
-			// https://core.trac.wordpress.org/changeset/29378
-			$loader = libxml_disable_entity_loader(true);
+			if (PHP_VERSION_ID < 80000) {
+				// http://websec.io/2012/08/27/Preventing-XEE-in-PHP.html
+				// https://core.trac.wordpress.org/changeset/29378
+				// This function has been deprecated in PHP 8.0 because in libxml 2.9.0, external entity loading is
+				// disabled by default, so this function is no longer needed to protect against XXE attacks.
+				$loader = libxml_disable_entity_loader(true);
+			}
 			$XMLobject = simplexml_load_string($XMLstring, 'SimpleXMLElement', LIBXML_NOENT);
 			$return = self::SimpleXMLelement2array($XMLobject);
-			libxml_disable_entity_loader($loader);
+			if (PHP_VERSION_ID < 80000 && isset($loader)) {
+				libxml_disable_entity_loader($loader);
+			}
 			return $return;
 		}
 		return false;
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 00c2762b63..193c9ff977 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.6-beta4-49620';
+$wp_version = '5.6-beta4-49621';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.