From 5510f1feef7417205f8bf2da2ab9dd053aefa1e9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=BCdiger=20Hahn?= <ruediger@hahnsworld.net>
Date: Fri, 9 Oct 2020 10:59:06 +0200
Subject: [PATCH] Fix for #14957 and probably a lot of other issues

Convert special characters for a valid use in xml documents
---
 htdocs/includes/odtphp/odf.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/htdocs/includes/odtphp/odf.php b/htdocs/includes/odtphp/odf.php
index 5ec9b8f8870..f6e15b2e8a2 100644
--- a/htdocs/includes/odtphp/odf.php
+++ b/htdocs/includes/odtphp/odf.php
@@ -156,6 +156,7 @@ class Odf
      */
 	public function convertVarToOdf($value, $encode = true, $charset = 'ISO-8859')
 	{
+		$value = $encode ? htmlspecialchars($value) : $value;
 		$value = ($charset == 'ISO-8859') ? utf8_encode($value) : $value;
 		$convertedValue = $value;