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-rw-r--r--synapse/api/auth.py7
1 files changed, 7 insertions, 0 deletions
diff --git a/synapse/api/auth.py b/synapse/api/auth.py
index 9a5058a364..84a46385bb 100644
--- a/synapse/api/auth.py
+++ b/synapse/api/auth.py
@@ -232,6 +232,13 @@ class Auth(object):
             elif target_in_room:  # the target is already in the room.
                 raise AuthError(403, "%s is already in the room." %
                                      target_user_id)
+            else:
+                invite_level = self._get_named_level(auth_events, "invite", 0)
+
+                if user_level < invite_level:
+                    raise AuthError(
+                        403, "You cannot invite user %s." % target_user_id
+                    )
         elif Membership.JOIN == membership:
             # Joins are valid iff caller == target and they were:
             # invited: They are accepting the invitation