From 5975ced7e1ec2f0432c8333f5bc1b7f754a29d76 Mon Sep 17 00:00:00 2001
From: Paul Holden <paulh@moodle.com>
Date: Thu, 21 Sep 2023 22:22:38 +0100
Subject: [PATCH] MDL-79455 tool_uploadcourse: safe preview of uploaded course
 data.

---
 admin/tool/uploadcourse/classes/tracker.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/admin/tool/uploadcourse/classes/tracker.php b/admin/tool/uploadcourse/classes/tracker.php
index 0daa84527c5..8ce934cc1da 100644
--- a/admin/tool/uploadcourse/classes/tracker.php
+++ b/admin/tool/uploadcourse/classes/tracker.php
@@ -173,6 +173,10 @@ class tool_uploadcourse_tracker {
             } else {
                 $outcome = $OUTPUT->pix_icon('i/invalid', '');
             }
+
+            // Ensure our data is suitable for HTML output.
+            $data = array_map('s', $data);
+
             echo html_writer::start_tag('tr', array('class' => 'r' . $this->rownb % 2));
             echo html_writer::tag('td', $line, array('class' => 'c' . $ci++));
             echo html_writer::tag('td', $outcome, array('class' => 'c' . $ci++));