From ebfa39619539fcc7eab4465abe3594ee649c66af Mon Sep 17 00:00:00 2001
From: Hadi Nategh <hnategh@gmail.com>
Date: Mon, 13 Dec 2021 16:40:32 +0100
Subject: [PATCH] Decode html entities used in inline image sources because
 tinymce encodes them

---
 api/src/Mail.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/api/src/Mail.php b/api/src/Mail.php
index ed49d0db7e..890b1d4d49 100644
--- a/api/src/Mail.php
+++ b/api/src/Mail.php
@@ -6789,7 +6789,10 @@ class Mail
 						$ext = pathinfo($attachmentData['name'], PATHINFO_EXTENSION);
 						$attachmentData['type'] = MimeMagic::ext2mime($ext);
 						if ( strlen($directory) > 1 && !str_ends_with($directory, '/')) { $directory .= '/'; }
-						$myUrl = $directory.$attachmentData['name'];
+
+						//decode entities because tinymce encodes (e.g. Umlautes) them otherwise file can't be found.
+						$myUrl = html_entity_decode($directory.$attachmentData['name']);
+
 						if ($myUrl[0]=='/') // local path -> we only allow path's that are available via http/https (or vfs)
 						{
 							$basedir = Framework::getUrl('/');