From fb68b501395dad79f20777de0573e387f8f01820 Mon Sep 17 00:00:00 2001
From: Michael <heluecht@pirati.ca>
Date: Mon, 3 Dec 2018 15:59:53 +0000
Subject: [PATCH] Fix for exceptions on external redirects

---
 src/Core/System.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Core/System.php b/src/Core/System.php
index eadbf98d26..3bd06bc191 100644
--- a/src/Core/System.php
+++ b/src/Core/System.php
@@ -272,7 +272,7 @@ class System extends BaseObject
 	 */
 	public static function externalRedirect($url)
 	{
-		if (!filter_var($url, FILTER_VALIDATE_URL)) {
+		if (empty(parse_url($url, PHP_URL_SCHEME))) {
 			throw new InternalServerErrorException("'$url' is not a fully qualified URL, please use App->internalRedirect() instead");
 		}