diff --git a/mod/quiz/classes/external.php b/mod/quiz/classes/external.php
index 6e364e6bfe6..d38a9070701 100644
--- a/mod/quiz/classes/external.php
+++ b/mod/quiz/classes/external.php
@@ -1389,6 +1389,14 @@ class mod_quiz_external extends external_api {
             array(
                 'attemptid' => new external_value(PARAM_INT, 'attempt id'),
                 'page' => new external_value(PARAM_INT, 'page number'),
+                'preflightdata' => new external_multiple_structure(
+                    new external_single_structure(
+                        array(
+                            'name' => new external_value(PARAM_ALPHANUMEXT, 'data name'),
+                            'value' => new external_value(PARAM_RAW, 'data value'),
+                        )
+                    ), 'Preflight required data (like passwords)', VALUE_DEFAULT, array()
+                )
             )
         );
     }
@@ -1398,16 +1406,18 @@ class mod_quiz_external extends external_api {
      *
      * @param int $attemptid attempt id
      * @param int $page page number
+     * @param array $preflightdata preflight required data (like passwords)
      * @return array of warnings and status result
      * @since Moodle 3.1
      */
-    public static function view_attempt($attemptid, $page) {
+    public static function view_attempt($attemptid, $page, $preflightdata = array()) {
 
         $warnings = array();
 
         $params = array(
             'attemptid' => $attemptid,
             'page' => $page,
+            'preflightdata' => $preflightdata,
         );
         $params = self::validate_parameters(self::view_attempt_parameters(), $params);
         list($attemptobj, $messages) = self::validate_attempt($params);
@@ -1451,6 +1461,14 @@ class mod_quiz_external extends external_api {
         return new external_function_parameters (
             array(
                 'attemptid' => new external_value(PARAM_INT, 'attempt id'),
+                'preflightdata' => new external_multiple_structure(
+                    new external_single_structure(
+                        array(
+                            'name' => new external_value(PARAM_ALPHANUMEXT, 'data name'),
+                            'value' => new external_value(PARAM_RAW, 'data value'),
+                        )
+                    ), 'Preflight required data (like passwords)', VALUE_DEFAULT, array()
+                )
             )
         );
     }
@@ -1459,15 +1477,17 @@ class mod_quiz_external extends external_api {
      * Trigger the attempt summary viewed event.
      *
      * @param int $attemptid attempt id
+     * @param array $preflightdata preflight required data (like passwords)
      * @return array of warnings and status result
      * @since Moodle 3.1
      */
-    public static function view_attempt_summary($attemptid) {
+    public static function view_attempt_summary($attemptid, $preflightdata = array()) {
 
         $warnings = array();
 
         $params = array(
             'attemptid' => $attemptid,
+            'preflightdata' => $preflightdata,
         );
         $params = self::validate_parameters(self::view_attempt_summary_parameters(), $params);
         list($attemptobj, $messages) = self::validate_attempt($params);
diff --git a/mod/quiz/tests/external_test.php b/mod/quiz/tests/external_test.php
index 741a92bf674..a62bb95ce65 100644
--- a/mod/quiz/tests/external_test.php
+++ b/mod/quiz/tests/external_test.php
@@ -1278,8 +1278,12 @@ class mod_quiz_external_testcase extends externallib_advanced_testcase {
 
         // Now, force the quiz with QUIZ_NAVMETHOD_SEQ (sequencial) navigation method.
         $DB->set_field('quiz', 'navmethod', QUIZ_NAVMETHOD_SEQ, array('id' => $quiz->id));
+        // Quiz requiring preflightdata.
+        $DB->set_field('quiz', 'password', 'abcdef', array('id' => $quiz->id));
+        $preflightdata = array(array("name" => "quizpassword", "value" => 'abcdef'));
+
         // See next page.
-        $result = mod_quiz_external::view_attempt($attempt->id, 1);
+        $result = mod_quiz_external::view_attempt($attempt->id, 1, $preflightdata);
         $result = external_api::clean_returnvalue(mod_quiz_external::view_attempt_returns(), $result);
         $this->assertTrue($result['status']);
 
@@ -1311,7 +1315,7 @@ class mod_quiz_external_testcase extends externallib_advanced_testcase {
         // Trigger and capture the event.
         $sink = $this->redirectEvents();
 
-        $result = mod_quiz_external::view_attempt_summary($attempt->id, 0);
+        $result = mod_quiz_external::view_attempt_summary($attempt->id);
         $result = external_api::clean_returnvalue(mod_quiz_external::view_attempt_summary_returns(), $result);
         $this->assertTrue($result['status']);
 
@@ -1327,6 +1331,14 @@ class mod_quiz_external_testcase extends externallib_advanced_testcase {
         $this->assertEventContextNotUsed($event);
         $this->assertNotEmpty($event->get_name());
 
+        // Quiz requiring preflightdata.
+        $DB->set_field('quiz', 'password', 'abcdef', array('id' => $quiz->id));
+        $preflightdata = array(array("name" => "quizpassword", "value" => 'abcdef'));
+
+        $result = mod_quiz_external::view_attempt_summary($attempt->id, $preflightdata);
+        $result = external_api::clean_returnvalue(mod_quiz_external::view_attempt_summary_returns(), $result);
+        $this->assertTrue($result['status']);
+
     }
 
     /**