diff --git a/core/attributedef/AttributeURL.php b/core/attributedef/AttributeURL.php
new file mode 100644
index 000000000..89dc55c67
--- /dev/null
+++ b/core/attributedef/AttributeURL.php
@@ -0,0 +1,110 @@
+<?php
+
+/**
+ * Map a varchar column to an URL (formats the ouput in HMTL)
+ *
+ * @package     iTopORM
+ */
+class AttributeURL extends AttributeString
+{
+    /**
+     * @var string
+     * SCHEME....... USER....................... PASSWORD.......................... HOST/IP........... PORT.......... PATH......................... GET............................................ ANCHOR..........................
+     * Example: http://User:passWord@127.0.0.1:8888/patH/Page.php?arrayArgument[2]=something:blah20#myAnchor
+     * @link http://www.php.net/manual/fr/function.preg-match.php#93824 regexp source
+     * @since 3.0.1 N°4515 handle Alfresco and Sharepoint URLs
+     * @since 3.0.3 moved from Config to AttributeURL constant
+     */
+    public const DEFAULT_VALIDATION_PATTERN = /** @lang RegExp */
+        '(https?|ftp)\://([a-zA-Z0-9+!*(),;?&=\$_.-]+(\:[a-zA-Z0-9+!*(),;?&=\$_.-]+)?@)?([a-zA-Z0-9-.]{3,})(\:[0-9]{2,5})?(/([a-zA-Z0-9:%+\$_-]\.?)+)*/?(\?[a-zA-Z+&\$_.-][a-zA-Z0-9;:[\]@&%=+/\$_.,-]*)?(#[a-zA-Z0-9_.-][a-zA-Z0-9+\$_.-]*)?';
+
+    /**
+     * Useless constructor, but if not present PHP 7.4.0/7.4.1 is crashing :( (N°2329)
+     *
+     * @see https://www.php.net/manual/fr/language.oop5.decon.php states that child constructor can be ommited
+     * @see https://bugs.php.net/bug.php?id=79010 bug solved in PHP 7.4.9
+     *
+     * @param string $sCode
+     * @param array $aParams
+     *
+     * @throws \Exception
+     * @noinspection SenselessProxyMethodInspection
+     */
+    public function __construct($sCode, $aParams)
+    {
+        parent::__construct($sCode, $aParams);
+    }
+
+    public static function ListExpectedParams()
+    {
+        //return parent::ListExpectedParams();
+        return array_merge(parent::ListExpectedParams(), array("target"));
+    }
+
+    protected function GetSQLCol($bFullSpec = false)
+    {
+        return "VARCHAR(2048)"
+            . CMDBSource::GetSqlStringColumnDefinition()
+            . ($bFullSpec ? $this->GetSQLColSpec() : '');
+    }
+
+    public function GetMaxSize()
+    {
+        return 2048;
+    }
+
+    public function GetEditClass()
+    {
+        return "String";
+    }
+
+    public function GetAsHTML($sValue, $oHostObject = null, $bLocalize = true)
+    {
+        $sTarget = $this->Get("target");
+        if (empty($sTarget)) {
+            $sTarget = "_blank";
+        }
+        $sLabel = Str::pure2html($sValue);
+        if (strlen($sLabel) > 128) {
+            // Truncate the length to 128 characters, by removing the middle
+            $sLabel = substr($sLabel, 0, 100) . '.....' . substr($sLabel, -20);
+        }
+
+        return "<a target=\"$sTarget\" href=\"$sValue\">$sLabel</a>";
+    }
+
+    public function GetValidationPattern()
+    {
+        return $this->GetOptional('validation_pattern', '^' . utils::GetConfig()->Get('url_validation_pattern') . '$');
+    }
+
+    public static function GetFormFieldClass()
+    {
+        return '\\Combodo\\iTop\\Form\\Field\\UrlField';
+    }
+
+    /**
+     * @param \DBObject $oObject
+     * @param \Combodo\iTop\Form\Field\UrlField $oFormField
+     *
+     * @return null
+     * @throws \CoreException
+     */
+    public function MakeFormField(DBObject $oObject, $oFormField = null)
+    {
+        if ($oFormField === null) {
+            $sFormFieldClass = static::GetFormFieldClass();
+            $oFormField = new $sFormFieldClass($this->GetCode());
+        }
+        parent::MakeFormField($oObject, $oFormField);
+
+        $oFormField->SetTarget($this->Get('target'));
+
+        return $oFormField;
+    }
+
+    protected function GetChangeRecordClassName(): string
+    {
+        return CMDBChangeOpSetAttributeURL::class;
+    }
+}
\ No newline at end of file