diff --git a/library/Icinga/Authentication/Auth.php b/library/Icinga/Authentication/Auth.php
index e726f1b3a..431a7777c 100644
--- a/library/Icinga/Authentication/Auth.php
+++ b/library/Icinga/Authentication/Auth.php
@@ -256,6 +256,23 @@ class Auth
         return $this->user;
     }
 
+    /**
+     * Set the authenticated user
+     *
+     * Note that this method just sets the authenticated user and thus bypasses our default authentication process in
+     * {@link setAuthenticated()}.
+     *
+     * @param User $user
+     *
+     * @return $this
+     */
+    public function setUser(User $user)
+    {
+        $this->user = $user;
+
+        return $this;
+    }
+
     /**
      * Try to authenticate the user with the current session
      *