From e11bd13a7e60b40bac729472d20675164ed30bbe Mon Sep 17 00:00:00 2001
From: AlterBrains <alterbrains@gmail.com>
Date: Wed, 8 May 2024 19:26:55 +0300
Subject: [PATCH] Update InputFilter.php (#43377)

---
 libraries/src/Filter/InputFilter.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/src/Filter/InputFilter.php b/libraries/src/Filter/InputFilter.php
index ecca3668ecd81..de7ef8d929043 100644
--- a/libraries/src/Filter/InputFilter.php
+++ b/libraries/src/Filter/InputFilter.php
@@ -454,7 +454,7 @@ function ($m) {
         $source = preg_replace_callback(
             '/&#x([a-f0-9]+);/mi',
             function ($m) {
-                return mb_convert_encoding(\chr('0x' . $m[1]), 'UTF-8', 'ISO-8859-1');
+                return mb_convert_encoding(\chr(\hexdec($m[1])), 'UTF-8', 'ISO-8859-1');
             },
             $source
         );