Ticket #39061: 39061.diff

src/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php

@@ -317 +317 @@
                 }
 
                 $max_pages = ceil( $total_posts / (int) $posts_query->query_vars['posts_per_page'] );
+
+                if ( $page > $max_pages ) {
+                        return new WP_Error( 'rest_post_invalid_page_number', __( 'The page number requested is larger than the number of pages available.' ), array( 'status' => 400 ) );
+                }
+
                 $response  = rest_ensure_response( $posts );
 
                 $response->header( 'X-WP-Total', (int) $total_posts );