diff --git a/interface/lib/classes/tform_base.inc.php b/interface/lib/classes/tform_base.inc.php
index d030c558cdbee9370f0955f0fd1ee679bb588dbc..d61afd016ed70b14d95fa8d60a74ddce05025d3a 100644
--- a/interface/lib/classes/tform_base.inc.php
+++ b/interface/lib/classes/tform_base.inc.php
@@ -709,6 +709,8 @@ class tform_base {
 				}
 				if($_csrf_valid !== true) {
 					$app->log('CSRF attempt blocked. Referer: ' . (isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : 'unknown'), LOGLEVEL_WARN);
+					$errmsg = 'err_csrf_attempt_blocked';
+					$this->errorMessage .= ($api == true ? $errmsg : $this->wordbook[$errmsg]."<br />") . "\r\n";
 					unset($_POST);
 					unset($record);
 				}
diff --git a/interface/lib/lang/de.lng b/interface/lib/lang/de.lng
index 735b1da09cf850006c07e65ff7f4ab1a44d5c2ce..1fc1152558a023be746430c57791445239ace5c2 100644
--- a/interface/lib/lang/de.lng
+++ b/interface/lib/lang/de.lng
@@ -41,6 +41,7 @@ $wb['top_menu_mailuser'] = 'E-Mail Benutzer';
 $wb['top_menu_domain'] = 'Domains';
 $wb['top_menu_dashboard'] = 'Ãœbersicht';
 $wb['latest_news_txt'] = 'Neuigkeiten';
+$wb['err_csrf_attempt_blocked'] = 'CSRF-Versuch blockiert.';
 $wb['top_menu_vm'] = 'vServer';
 $wb['daynamesmin_su'] = 'So';
 $wb['daynamesmin_mo'] = 'Mo';
diff --git a/interface/lib/lang/en.lng b/interface/lib/lang/en.lng
index 3c2bfafe2085347ca5236e38283981645a652c01..d6867390078a37f7219a0fbe1b942ca7b07616b3 100644
--- a/interface/lib/lang/en.lng
+++ b/interface/lib/lang/en.lng
@@ -131,6 +131,7 @@ $wb['datalog_status_d_web_folder'] = 'Delete folder protection';
 $wb['datalog_status_i_web_folder_user'] = 'Create folder protection user';
 $wb['datalog_status_u_web_folder_user'] = 'Update folder protection user';
 $wb['datalog_status_d_web_folder_user'] = 'Delete folder protection user';
+$wb['err_csrf_attempt_blocked'] = 'CSRF attempt blocked.';
 $wb['login_as_txt'] = 'Log in as';
 $wb["no_domain_perm"] = 'You have no permission for this domain.';
 $wb["no_destination_perm"] = 'You have no permission for this destination.';