← fix library

HIGH Langflow: Langflow instance exposed to the internet

Why it matters

Your Langflow UI is reachable from the internet. Flows, stored credentials and model API keys sit behind it, and older versions have unauthenticated remote-code-execution vulnerabilities that bots exploit within hours of disclosure.

Fix it — 3 steps

1. Upgrade to the latest Langflow first: several pre-1.9 versions have unauthenticated RCE. Do this before anything else.
2. Restrict access: bind to 127.0.0.1 and reach it via SSH tunnel or Tailscale, or put it behind an authenticating reverse proxy.
3. Block the port as a seatbelt: `sudo ufw deny 7860`.

Verify it’s fixed

curl -m 5 http://YOUR_SERVER_IP:7860/  # should be unreachable from outside

References

• https://docs.langflow.org/