Hello, I’ve been using Node-RED to control my alarm system for a few years without any issues—until a few months ago, when I started regularly losing the dashboard. Let me explain: when the problem occurred, I checked my flows, only to find that mine had disappeared and been replaced by a simple f…

You may have been hacked/attacked. Open all nodes you can and see what they are doing. DISCONNECT IT FROM THE NETWORK! Open all 4 nodes and DISABLE them then re-deploy. Only to keep the evidence and maybe others can better help you. P.S. Is the machine headless?

You should also check for other compromises and unauthorised software installed on the server. Disconnecting it from the Internet is the most important first step. Then disabling the current flow(s). Then work out what else has been compromised, disabling any unknown services. Then change all your …

Hello, thank you for the feedback. Node 5.0 is installed on a Raspberry Pi running SMP Raspbian 1:6.18.34-1+rpt1. I performed a complete reinstallation on a 32GB SD card. My second Raspberry Pi running Node-RED 5.0 connects to the internet without issues. Even after swapping the SD cards between …

ust so you know: My flow is disappearing and being replaced by another one (an image copy flow) without any action on my part! (Attachment défaut alarme maison.docx is missing)

This is the exact consequence we've seen many times on compromised systems. It doesn't really matter how the system has been compromised or even what route the compromise took (could have been via a different system for example) other than how extensively you will need to review systems until you h…

Once a hacker has access to your network, in order to preserve and broaden their access, they will try to corrupt other computers, possibly even your router. If the unwanted flow comes back on a reinstalled OS, it suggests that other devices may have already been compromised. Perhaps you set up po…

Have you opened any ports in your router to allow access from across the internet?

Hello. Yes, a single port on my router is dedicated to this Raspberry Pi; I still need to find a way to protect against unauthorized access. The password is new and uses a mix of characters. Best regards.

Hello. Yes, only one port on my router is dedicated to this Raspberry Pi; I still need to find a way to protect against unauthorized access—the password is new and uses a mix of characters. I have a second Raspberry Pi connected to my router, but it isn't accessible from the outside, so it hasn't be…

My flows disappears and is remplaced by another one without any action on my part

General

Steve-Mcl 12 July 2026 05:53 3

If you have opened your node-red to the internet (for remote access) without proper security,
there is a good chance your system is compromised.

Please read through the threads in security (start with this one: Safely accessing Node-RED over the Internet)

Topic		Replies	Views
The flows disappear General security	12	138	14 July 2024
Anyone know what this is? General security	4	208	6 January 2025
Dashboard disappears after a while Dashboard	8	358	24 January 2024
Hacker erased my flows and put THIS flow in General security	18	509	16 January 2024
All flows gone after fresh install General	38	848	9 December 2023

My flows disappears and is remplaced by another one without any action on my part

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