diff --git a/core/modules/views/src/Plugin/views/row/RssFields.php b/core/modules/views/src/Plugin/views/row/RssFields.php
index a420bb7..fefd2b5 100644
--- a/core/modules/views/src/Plugin/views/row/RssFields.php
+++ b/core/modules/views/src/Plugin/views/row/RssFields.php
@@ -3,7 +3,8 @@
 namespace Drupal\views\Plugin\views\row;
 
 use Drupal\Core\Form\FormStateInterface;
-use Drupal\Core\Url;
+use Drupal\Core\Path\PathValidatorInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**
  * Renders an RSS item based on fields.
@@ -19,6 +20,43 @@
 class RssFields extends RowPluginBase {
 
   /**
+   * The path validator.
+   *
+   * @var \Drupal\Core\Path\PathValidatorInterface
+   */
+  protected $pathValidator;
+
+  /**
+   * Constructs a RssFields object.
+   *
+   * @param array $configuration
+   *   A configuration array containing information about the plugin instance.
+   * @param string $plugin_id
+   *   The plugin_id for the plugin instance.
+   * @param mixed $plugin_definition
+   *   The plugin implementation definition.
+   * @param \Drupal\Core\Path\PathValidatorInterface $path_validator
+   *  The path validator.
+   */
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, PathValidatorInterface $path_validator) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+
+    $this->pathValidator = $path_validator;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    return new static(
+      $configuration,
+      $plugin_id,
+      $plugin_definition,
+      $container->get('path.validator')
+    );
+  }
+
+  /**
    * Does the row plugin support to add fields to it's output.
    *
    * @var bool
@@ -141,7 +179,12 @@ public function render($row) {
     $item->title = $this->getField($row_index, $this->options['title_field']);
     // @todo Views should expect and store a leading /. See:
     //   https://www.drupal.org/node/2423913
-    $item->link = Url::fromUserInput('/' . $this->getField($row_index, $this->options['link_field']))->setAbsolute()->toString();
+    $item->link = $this->getField($row_index, $this->options['link_field']);
+
+    // Set to a URL if value is a valid path.
+    if ($url = $this->pathValidator->getUrlIfValid($item->link)) {
+      $item->link = $url->setAbsolute()->toString();
+    }
 
     $field = $this->getField($row_index, $this->options['description_field']);
     $item->description = is_array($field) ? $field : ['#markup' => $field];
@@ -160,7 +203,9 @@ public function render($row) {
       $guid_is_permalink_string = 'true';
       // @todo Enforce GUIDs as system-generated rather than user input? See
       //   https://www.drupal.org/node/2430589.
-      $item_guid = Url::fromUserInput('/' . $item_guid)->setAbsolute()->toString();
+      if ($url = $this->pathValidator->getUrlIfValid($item_guid)) {
+        $item_guid = $url->setAbsolute()->toString();
+      }
     }
     $item->elements[] = array(
       'key' => 'guid',