diff --git a/wp-includes/formatting.php b/wp-includes/formatting.php
index c34f61e499..c76e8730fe 100644
--- a/wp-includes/formatting.php
+++ b/wp-includes/formatting.php
@@ -2047,6 +2047,7 @@ function sanitize_file_name( $filename ) {
 
 	$filename = str_replace( $special_chars, '', $filename );
 	$filename = str_replace( array( '%20', '+' ), '-', $filename );
+	$filename = preg_replace( '/\.{2,}/', '.', $filename );
 	$filename = preg_replace( '/[\r\n\t -]+/', '-', $filename );
 	$filename = trim( $filename, '.-_' );
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index c74631310b..dd72204902 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.2-alpha-55208';
+$wp_version = '6.2-alpha-55209';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.