Malicious value error on form after n8n installation

Hello,
After installing n8n on a server with an external database (supabase), I have this error message:

and the form comes back every time

Information on your n8n setup

  • n8n version: 1.56.2
  • Database (default: SQLite): external database (supabase)
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via (Docker, npm, n8n cloud, desktop app): Docker
  • Operating system: Ubuntu 24

Thank you for your report. Tested and could not reproduce. Can you please share the exact answers you selected?

While making the video to show you, I got the same error the first time and then I didn’t get the error anymore (and so the form was successfully submitted)

This is a false positive coming from the less than sign on this line.

We will send out a patch for this soon. Thanks again for reporting.

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Addressed here: fix(core): Tighten check for company size survey answer by ivov · Pull Request #10646 · n8n-io/n8n · GitHub

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