From 7bb686d18b16dff0e94c75d87fd3adaecf6a4d7b Mon Sep 17 00:00:00 2001
From: Sergey Biryukov <sergeybiryukov.ru@gmail.com>
Date: Sat, 13 Apr 2024 16:33:13 +0000
Subject: [PATCH] Users: Account for returning `false` from the `authenticate`
 filter.

While technically only `null`, `WP_User`, or `WP_Error` should be returned from the `authenticate` filter, a plugin might return boolean `false` instead, which would trigger the `authentication_failed` error prior to [57882].

This commit aims to preserve that behavior in case `false` is returned.

Follow-up to [57882].

Props johnbillion.
See #60700.
Built from https://develop.svn.wordpress.org/trunk@57990


git-svn-id: http://core.svn.wordpress.org/trunk@57476 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/pluggable.php | 2 +-
 wp-includes/version.php   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/wp-includes/pluggable.php b/wp-includes/pluggable.php
index 51701e787e..5ed63e539c 100644
--- a/wp-includes/pluggable.php
+++ b/wp-includes/pluggable.php
@@ -617,7 +617,7 @@ if ( ! function_exists( 'wp_authenticate' ) ) :
 		 */
 		$user = apply_filters( 'authenticate', null, $username, $password );
 
-		if ( null === $user ) {
+		if ( null === $user || false === $user ) {
 			/*
 			 * TODO: What should the error message be? (Or would these even happen?)
 			 * Only needed if all authentication handlers fail to return anything.
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 24aa8e9659..e6fcc51c8e 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.6-alpha-57989';
+$wp_version = '6.6-alpha-57990';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.