From 6b8997cbda109d6f11ec0d9706e85038fbe750cf Mon Sep 17 00:00:00 2001
From: zhouzb <zhouzb@emqx.io>
Date: Wed, 1 Dec 2021 09:23:36 +0800
Subject: [PATCH] fix(authn): fix superuser when missing is_superuser_field

---
 apps/emqx_authn/src/simple_authn/emqx_authn_mongodb.erl | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/apps/emqx_authn/src/simple_authn/emqx_authn_mongodb.erl b/apps/emqx_authn/src/simple_authn/emqx_authn_mongodb.erl
index 7e080dfee..2deef8506 100644
--- a/apps/emqx_authn/src/simple_authn/emqx_authn_mongodb.erl
+++ b/apps/emqx_authn/src/simple_authn/emqx_authn_mongodb.erl
@@ -237,7 +237,9 @@ check_password(Password,
 
 is_superuser(Doc, #{is_superuser_field := IsSuperuserField}) ->
     IsSuperuser = maps:get(IsSuperuserField, Doc, false),
-    emqx_authn_utils:is_superuser(#{<<"is_superuser">> => IsSuperuser}).
+    emqx_authn_utils:is_superuser(#{<<"is_superuser">> => IsSuperuser});
+is_superuser(_, _) ->
+    emqx_authn_utils:is_superuser(#{<<"is_superuser">> => false}).
 
 hash(Algorithm, Password, Salt, prefix) ->
     emqx_passwd:hash(Algorithm, <<Salt/binary, Password/binary>>);