From bd21e3a8d6e29d39f5e05fff426e157fc04fae63 Mon Sep 17 00:00:00 2001
From: Bernd Bestel <bernd@berrnd.de>
Date: Sat, 2 Jan 2021 20:08:13 +0100
Subject: [PATCH] Don't filter ampersands (fixes #1247)

---
 controllers/BaseController.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/controllers/BaseController.php b/controllers/BaseController.php
index bec18314..f51f6109 100644
--- a/controllers/BaseController.php
+++ b/controllers/BaseController.php
@@ -219,6 +219,9 @@ class BaseController
 			{
 				$value = self::$htmlPurifierInstance->purify($value);
 			}
+
+			// Allow some special chars
+			$value = str_replace('&amp;', '&', $value);
 		}
 
 		return $requestBody;