Merge pull request #26559 from IljaN/master

Username autocomplete option in admin menu now also toggles autocomp…

core/ajax/share.php

@@ -212,7 +212,11 @@ if (isset($_POST['action']) && isset($_POST['itemType']) && isset($_POST['itemSo
 			$result = [];
 			if (isset($_GET['search'])) {
 				$cm = OC::$server->getContactsManager();
-				if (!is_null($cm) && $cm->isEnabled()) {
+
+				$userEnumerationAllowed = OC::$server->getConfig()
+					->getAppValue('core', 'shareapi_allow_share_dialog_user_enumeration', 'no') == 'yes';
+
+				if (!is_null($cm) && $cm->isEnabled() && $userEnumerationAllowed) {
 					$contacts = $cm->search((string)$_GET['search'], ['FN', 'EMAIL']);
 					foreach ($contacts as $contact) {
 						if (!isset($contact['EMAIL'])) {