diff --git a/framework/CHANGELOG.md b/framework/CHANGELOG.md
index 08982f47655..fcf5ff7da9f 100644
--- a/framework/CHANGELOG.md
+++ b/framework/CHANGELOG.md
@@ -6,6 +6,7 @@ Yii Framework 2 Change Log
 
 - Bug #20191: Fix `ActiveRecord::getDirtyAttributes()` for JSON columns with multi-dimensional array values (brandonkelly)
 - Bug #20175: Fix bad result for pagination when used with GridView (@lav45)
+- Bug #20199: Fix yii\web\UrlManager::createAbsoluteUrl() external absolute links creation (@edegaudenzi)
 
 
 2.0.50 May 30, 2024
diff --git a/framework/helpers/BaseUrl.php b/framework/helpers/BaseUrl.php
index 864dbc63c48..a671123c7cd 100644
--- a/framework/helpers/BaseUrl.php
+++ b/framework/helpers/BaseUrl.php
@@ -378,7 +378,7 @@ public static function home($scheme = false)
      */
     public static function isRelative($url)
     {
-        return preg_match('~^[[:alpha:]][[:alnum:]+-.]*://|^//~', $url) === 0;
+        return strncmp($url, '//', 2) && strpos($url, '://') === false;
     }
 
     /**