high · 7.1

n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the Edit Fields (Set) node.

CVE-2026-72749 · GHSA-vg34-hpfq-m5qm · EUVD-2026-56139 · published 11 Aug 2026

How serious is it

  • Severity: high, CVSS score 7.1 out of 10.
  • No exploit prediction (EPSS) score yet.
  • Not on the CISA list of exploited vulnerabilities.
  • No public exploit in Exploit-DB.

Is your app affected by CVE-2026-72749?

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Who is affected

  • n8n-io n8n: 2.0.0-rc.0 <2.31.5
  • n8n-io n8n: 0 <1.123.67
  • n8n-io n8n: 2.32.0 <2.32.1

How to check

  1. Find out whether you run the affected product and which version, then compare it with the versions above.

How to fix

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  1. Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
  2. If a vulnerable version was live, check your logs and rotate the secrets that server could read.

The advisory

n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the Edit Fields (Set) node. The node assigns output fields via a dot-notation path setter without restricting the field name, allowing an authenticated user to name a field after an inherited built-in method path and corrupt a shared global in the main Node.js process. Because that global is used on the request-authentication path, the instance then fails every authenticated request, causing an instance-wide denial of service for all users until the process is restarted.

Check your whole app

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References

Merged from ENISA EUVD. Last updated 30 Oct 2026. All vulnerabilities · RSS · JSON

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