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-rw-r--r--includes/form.inc5
1 files changed, 5 insertions, 0 deletions
diff --git a/includes/form.inc b/includes/form.inc
index 2b88389d2..039f73719 100644
--- a/includes/form.inc
+++ b/includes/form.inc
@@ -54,6 +54,11 @@ function drupal_get_form($form_id, &$form, $callback = NULL) {
$form['#type'] = 'form';
if (isset($form['#token'])) {
+ // Make sure that a private key is set:
+ if (!variable_get('drupal_private_key', '')) {
+ variable_set('drupal_private_key', mt_rand());
+ }
+
$form['form_token'] = array('#type' => 'hidden', '#value' => md5($_SERVER['REMOTE_ADDR'] . $form['#token'] . variable_get('drupal_private_key',
'')));
}