Anna Kalata
--- a/modules/contact/contact.pages.inc
+++ b/modules/contact/contact.pages.inc
    '#default_value' => $user->uid ? $user->mail : '',
    '#required' => TRUE,
  );
+
+  // Do not allow authenticated users to alter the name or e-mail values to
+  // prevent the impersonation of other users.
+  if ($user->uid) {
+    $form['name']['#disabled'] = $form['mail']['#disabled'] = TRUE;
+
--- a/modules/contact/contact.pages.inc
+++ b/modules/contact/contact.pages.inc
    '#default_value' => $user->uid ? $user->mail : '',
    '#required' => TRUE,
  );
+
+  // Do not allow authenticated users to alter the name or e-mail values to
+  // prevent the impersonation of other users.
+  if (!empty($user->uid)) {
--- a/modules/contact/contact.pages.inc
+++ b/modules/contact/contact.pages.inc
    '#default_value' => $user->uid ? $user->mail : '',
    '#required' => TRUE,
  );
+
+  // Do not allow authenticated users to alter the name or e-mail values to
+  // prevent the impersonation of other users.
+  if (!empty($user->uid)) {
+    $form['name']['#disabled'] = $form['mail']['#disabled'] = FALSE;