---
id: CVE-2026-72749
title: n8n before 1.123.67 Prototype Pollution via Edit Fields
summary: >-
  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
  authenticat…
severity: high
cvss: 7.1
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'
cvssSource: cna
cwe:
  - CWE-1321
vendor: n8n-io
product: n8n
affected:
  - n8n < 1.123.67
  - n8n >= 2.32.0 < 2.32.1
  - n8n >= 2.0.0-rc.0 < 2.31.5
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-08-11T17:41:04.589878Z'
published: '2026-08-11'
updated: '2026-10-29'
sourceUpdated: '2026-10-29T21:16:34.851Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-72749'
references:
  - url: 'https://github.com/n8n-io/n8n/security/advisories/GHSA-xwx6-jjhv-84p8'
    label: GitHub Security Advisory (GHSA-xwx6-jjhv-84p8)
  - url: >-
      https://www.vulncheck.com/advisories/n8n-before-prototype-pollution-via-edit-fields
    label: >-
      VulnCheck Advisory: n8n before 1.123.67 Prototype Pollution via Edit
      Fields
tags:
  - cve.org
epss: 0.00573
epssPercentile: 0.47341
ingestedAt: '2026-11-03T08:39:35.586Z'
---

## Overview

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.

## Affected

- `n8n < 1.123.67`
- `n8n >= 2.32.0 < 2.32.1`
- `n8n >= 2.0.0-rc.0 < 2.31.5`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.