Ticket #43692: 43692.diff

src/wp-includes/class-wp-user.php

@@ -241 +241 @@
 
                 if ( ! $user = $wpdb->get_row(
                         $wpdb->prepare(
-                                "SELECT * FROM $wpdb->users WHERE $db_field = %s", $value
+                                "SELECT * FROM $wpdb->users WHERE $db_field = %s LIMIT 1", $value
                         )
                 ) ) {
                         return false;