diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php
index 7e3e5636c4..26b78c5e35 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php
@@ -1294,7 +1294,9 @@ class WP_REST_Posts_Controller extends WP_REST_Controller {
 		// Can we read the parent if we're inheriting?
 		if ( 'inherit' === $post->post_status && $post->post_parent > 0 ) {
 			$parent = get_post( $post->post_parent );
-			return $this->check_read_permission( $parent );
+			if ( $parent ) {
+				return $this->check_read_permission( $parent );
+			}
 		}
 
 		/*
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 8ac59b9ea3..6c69931c63 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.8-alpha-40305';
+$wp_version = '4.8-alpha-40306';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.