Allow forwarding to noroute admin route

Author: fredden

lib/internal/Magento/Framework/App/Action/Forward.php

@@ -7,15 +7,17 @@
  */
 namespace Magento\Framework\App\Action;
 
+use Magento\Framework\App\CsrfAwareActionInterface;
 use Magento\Framework\App\RequestInterface;
+use Magento\Framework\App\Request\InvalidRequestException;
 use Magento\Framework\App\ResponseInterface;
 
 /**
  * Forward request further.
  *
  * @SuppressWarnings(PHPMD.AllPurposeAction)
  */
-class Forward extends AbstractAction
+class Forward extends AbstractAction implements CsrfAwareActionInterface
 {
     /**
      * @param RequestInterface $request
@@ -35,4 +37,21 @@ public function execute()
         $this->_request->setDispatched(false);
         return $this->_response;
     }
+
+    /**
+     * @inheritDoc
+     */
+    public function createCsrfValidationException(RequestInterface $request): ?InvalidRequestException
+    {
+        return new InvalidRequestException($this->_response);
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function validateForCsrf(RequestInterface $request): ?bool
+    {
+        // This exists so that we can forward to the noroute action in the admin
+        return true;
+    }
 }