Index: includes/menu.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/menu.inc,v
retrieving revision 1.146.2.2
diff -u -p -r1.146.2.2 menu.inc
--- includes/menu.inc	11 Feb 2008 05:26:53 -0000	1.146.2.2
+++ includes/menu.inc	25 May 2009 20:29:22 -0000
@@ -1077,6 +1077,12 @@ function _menu_build() {
       }
       unset($item['callback']);
     }
+
+    // Ensure access is a boolean to prevent granting access by mistake.
+    if (isset($item['access'])) {
+      $item['access'] = ($item['access'] === TRUE);
+    }
+
     $_menu['items'][$mid] = $item;
     $_menu['path index'][$item['path']] = $mid;