diff -urNp vendor/symfony/runtime/GenericRuntime.php.orig vendor/symfony/runtime/GenericRuntime.php
--- vendor/symfony/runtime/GenericRuntime.php.orig	2023-01-13 04:02:34.828549046 +0100
+++ vendor/symfony/runtime/GenericRuntime.php	2023-01-13 04:02:39.328567501 +0100
@@ -69,7 +69,7 @@ class GenericRuntime implements RuntimeI
         }
 
         if ($debug) {
-            umask(0000);
+            umask(0022);
             $_SERVER[$debugKey] = $_ENV[$debugKey] = '1';
 
             if (false !== $errorHandler = ($options['error_handler'] ?? BasicErrorHandler::class)) {