diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php
index 2320668222..21a4b829a7 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php
@@ -1291,7 +1291,11 @@ class WP_REST_Users_Controller extends WP_REST_Controller {
 		if ( false !== strpos( $password, '\\' ) ) {
 			return new WP_Error(
 				'rest_user_invalid_password',
-				__( 'Passwords cannot contain the "\\" character.' ),
+				sprintf(
+					/* translators: %s: The '\' character. */
+					__( 'Passwords cannot contain the "%s" character.' ),
+					'\\'
+				),
 				array( 'status' => 400 )
 			);
 		}
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 12daa11936..68df00519e 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.6-alpha-48689';
+$wp_version = '5.6-alpha-48692';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.