From fde9c1c2e2d592660f54b0ff68ac99c80dd04a88 Mon Sep 17 00:00:00 2001
From: Ryan Cramer <ryan@processwire.com>
Date: Fri, 16 Jun 2023 09:02:23 -0400
Subject: [PATCH] Fix issue processwire/processwire-issues#1755

---
 .../modules/Markup/MarkupHTMLPurifier/MarkupHTMLPurifier.module | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wire/modules/Markup/MarkupHTMLPurifier/MarkupHTMLPurifier.module b/wire/modules/Markup/MarkupHTMLPurifier/MarkupHTMLPurifier.module
index 0a85f8e4..2c4059e4 100644
--- a/wire/modules/Markup/MarkupHTMLPurifier/MarkupHTMLPurifier.module
+++ b/wire/modules/Markup/MarkupHTMLPurifier/MarkupHTMLPurifier.module
@@ -78,7 +78,7 @@ class MarkupHTMLPurifier extends WireData implements Module {
 	 */
 	public function init() {
 		$this->settings->set('Cache.SerializerPath', $this->getCachePath());
-		$this->settings->set('Attr.AllowedRel', array('nofollow'));
+		$this->settings->set('Attr.AllowedRel', array('nofollow', 'noopener', 'noreferrer'));
 		$this->settings->set('HTML.DefinitionID', 'html5-definitions');
 		$this->settings->set('HTML.DefinitionRev', 1);
 		$this->def = $this->settings->maybeGetRawHTMLDefinition();