Merge branch 'MAGETWO-92174' into 2.1.15-bugfixes-010818

Author: Dmytro Voskoboinikov

app/code/Magento/Catalog/Controller/Adminhtml/Product/MassDelete.php

@@ -9,6 +9,7 @@
 use Magento\Framework\Controller\ResultFactory;
 use Magento\Catalog\Controller\Adminhtml\Product\Builder;
 use Magento\Backend\App\Action\Context;
+use Magento\Framework\Exception\NotFoundException;
 use Magento\Ui\Component\MassAction\Filter;
 use Magento\Catalog\Model\ResourceModel\Product\CollectionFactory;
 
@@ -45,9 +46,14 @@ public function __construct(
 
     /**
      * @return \Magento\Backend\Model\View\Result\Redirect
+     * @throws NotFoundException
+     * @throws \Magento\Framework\Exception\LocalizedException
      */
     public function execute()
     {
+        if (!$this->getRequest()->isPost()) {
+            throw new NotFoundException(__('Page not found'));
+        }
         $collection = $this->filter->getCollection($this->collectionFactory->create());
         $productDeleted = 0;
         foreach ($collection->getItems() as $product) {