Editor: Fix Path Traversal issue on Windows in Template-Part Block.

Props xknown.



Built from https://develop.svn.wordpress.org/trunk@58470


git-svn-id: http://core.svn.wordpress.org/trunk@57919 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/functions.php

@@ -6199,6 +6199,9 @@ function validate_file( $file, $allowed_files = array() ) {
 		return 0;
 	}
 
+	// Normalize path for Windows servers
+	$file = wp_normalize_path( $file );
+
 	// `../` on its own is not allowed:
 	if ( '../' === $file ) {
 		return 1;

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.6-beta3-58469';
+$wp_version = '6.6-beta3-58470';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.