diff --git a/apps/emqx/src/emqx_access_control.erl b/apps/emqx/src/emqx_access_control.erl
index b786e2c18..13b02bb4d 100644
--- a/apps/emqx/src/emqx_access_control.erl
+++ b/apps/emqx/src/emqx_access_control.erl
@@ -184,7 +184,7 @@ log_result(#{username := Username}, Topic, Action, From, Result) ->
     end,
     case Result of
         allow -> ?SLOG(info, (LogMeta())#{msg => "authorization_permission_allowed"});
-        deny -> ?SLOG(warning, (LogMeta())#{msg => "authorization_permission_denied"})
+        deny -> ?SLOG(info, (LogMeta())#{msg => "authorization_permission_denied"})
     end.
 
 %% @private Format authorization rules source.
diff --git a/apps/emqx/src/emqx_channel.erl b/apps/emqx/src/emqx_channel.erl
index bb9c84e8c..2ffe880f3 100644
--- a/apps/emqx/src/emqx_channel.erl
+++ b/apps/emqx/src/emqx_channel.erl
@@ -613,7 +613,7 @@ process_publish(Packet = ?PUBLISH_PACKET(QoS, Topic, PacketId), Channel) ->
             do_publish(PacketId, Msg, NChannel);
         {error, Rc = ?RC_NOT_AUTHORIZED, NChannel} ->
             ?SLOG(
-                warning,
+                info,
                 #{
                     msg => "cannot_publish_to_topic",
                     reason => emqx_reason_codes:name(Rc)
@@ -632,7 +632,7 @@ process_publish(Packet = ?PUBLISH_PACKET(QoS, Topic, PacketId), Channel) ->
             end;
         {error, Rc = ?RC_QUOTA_EXCEEDED, NChannel} ->
             ?SLOG(
-                warning,
+                info,
                 #{
                     msg => "cannot_publish_to_topic",
                     reason => emqx_reason_codes:name(Rc)
diff --git a/apps/emqx/src/emqx_session_events.erl b/apps/emqx/src/emqx_session_events.erl
index f46144020..856efac74 100644
--- a/apps/emqx/src/emqx_session_events.erl
+++ b/apps/emqx/src/emqx_session_events.erl
@@ -63,7 +63,7 @@ handle_event(ClientInfo, {dropped, Msg, #{reason := queue_full, logctx := Ctx}})
     ok = inc_pd('send_msg.dropped', 1),
     ok = inc_pd('send_msg.dropped.queue_full', 1),
     ?SLOG(
-        warning,
+        info,
         Ctx#{
             msg => "dropped_msg_due_to_mqueue_is_full",
             payload => Msg#message.payload
diff --git a/apps/emqx_license/src/emqx_license.erl b/apps/emqx_license/src/emqx_license.erl
index eaa9661e3..c0fc10b91 100644
--- a/apps/emqx_license/src/emqx_license.erl
+++ b/apps/emqx_license/src/emqx_license.erl
@@ -85,7 +85,7 @@ check(_ConnInfo, AckProps) ->
         {ok, #{max_connections := MaxClients}} ->
             case check_max_clients_exceeded(MaxClients) of
                 true ->
-                    ?SLOG(error, #{msg => "connection_rejected_due_to_license_limit_reached"}),
+                    ?SLOG(info, #{msg => "connection_rejected_due_to_license_limit_reached"}),
                     {stop, {error, ?RC_QUOTA_EXCEEDED}};
                 false ->
                     {ok, AckProps}
diff --git a/changes/ce/fix-12513.en.md b/changes/ce/fix-12513.en.md
new file mode 100644
index 000000000..00c1e8537
--- /dev/null
+++ b/changes/ce/fix-12513.en.md
@@ -0,0 +1 @@
+Change level of several flooding log events from warning to info.