diff --git a/login/confirm.php b/login/confirm.php
index 2aa7d4d0de1..cc86086763c 100644
--- a/login/confirm.php
+++ b/login/confirm.php
@@ -19,7 +19,7 @@
     if (!empty($data) || (!empty($p) && !empty($s))) {
 
         if (!empty($data)) {
-            $dataelements = explode('/',$data);
+            $dataelements = explode('/',$data, 2); // Stop after 1st slash. Rest is username. MDL-7647
             $usersecret = $dataelements[0];
             $username   = $dataelements[1];
         } else {