From d591f26ce7830e2b4d48ccbab4ed455f8142db12 Mon Sep 17 00:00:00 2001
From: Pascal Birchler <pascal.birchler@gmail.com>
Date: Sat, 9 Jan 2016 14:36:26 +0000
Subject: [PATCH] Ensure `wp_get_referer()` returns `false` when the referrer
 URL is the current URL.

Adds unit tests.

Fixes #19856.
Built from https://develop.svn.wordpress.org/trunk@36242


git-svn-id: http://core.svn.wordpress.org/trunk@36209 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/functions.php | 4 +++-
 wp-includes/version.php   | 2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index be0113254e..6dbc510af5 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -1525,8 +1525,10 @@ function wp_get_referer() {
 	elseif ( ! empty( $_SERVER['HTTP_REFERER'] ) )
 		$ref = wp_unslash( $_SERVER['HTTP_REFERER'] );
 
-	if ( $ref && $ref !== wp_unslash( $_SERVER['REQUEST_URI'] ) )
+	if ( $ref && $ref !== wp_unslash( $_SERVER['REQUEST_URI'] ) && $ref !== home_url() . wp_unslash( $_SERVER['REQUEST_URI'] ) ) {
 		return wp_validate_redirect( $ref, false );
+	}
+
 	return false;
 }
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index b7ba280568..90799aa3b7 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.5-alpha-36241';
+$wp_version = '4.5-alpha-36242';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.