From bcf1f8c7e43809d7ade9deb219b8b65e406d62a0 Mon Sep 17 00:00:00 2001
From: David Goodwin <david@codepoets.co.uk>
Date: Tue, 26 Jan 2021 20:47:45 +0000
Subject: [PATCH] move min_password_length check into a conditional
 Config::has() check first

---
 functions.inc.php | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/functions.inc.php b/functions.inc.php
index 0016bf5a..368467ab 100644
--- a/functions.inc.php
+++ b/functions.inc.php
@@ -872,9 +872,11 @@ function validate_password($password) {
     $result = array();
     $val_conf = Config::read_array('password_validation');
 
-    $minlen = (int) Config::read_string('min_password_length'); # used up to 2.3.x - check it for backward compatibility
-    if ($minlen > 0) {
-        $val_conf['/.{' . $minlen . '}/'] = "password_too_short $minlen";
+    if (Config::has('min_password_length')) {
+        $minlen = (int)Config::read_string('min_password_length'); # used up to 2.3.x - check it for backward compatibility
+        if ($minlen > 0) {
+            $val_conf['/.{' . $minlen . '}/'] = "password_too_short $minlen";
+        }
     }
 
     foreach ($val_conf as $regex => $message) {