---
id: CVE-2026-86083
title: n8n is an open source workflow automation platform
summary: >-
  n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7,
  and 2.38.2, the legacy expression engine generated source text by calling the
  mutable global JSON.stringify while printing synthetic string literals and
  inter…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-94
vendor: n8n
product: n8n
affected:
  - n8n < 1.123.76
  - 'n8n >= 2.0.0, < 2.37.7'
  - 'n8n >= 2.38.0, < 2.38.2'
patched:
  - n8n 2.38.2
published: '2026-09-08'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T16:12:56.010'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86083'
references:
  - url: 'https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.76'
    label: security-advisories@github.com
  - url: 'https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7'
    label: security-advisories@github.com
  - url: 'https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2'
    label: security-advisories@github.com
  - url: 'https://github.com/n8n-io/n8n/security/advisories/GHSA-6xcw-7xm6-48c6'
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86083'
  - url: 'https://github.com/advisories/GHSA-6xcw-7xm6-48c6'
tags:
  - nvd
  - cve.org
  - ghsa
  - npm
epss: 0.00664
epssPercentile: 0.49551
aliases:
  - GHSA-6xcw-7xm6-48c6
ecosystem: npm
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-09T13:24:48.914936Z'
scores:
  nvd: 8.8
  cna: 7.7
ingestedAt: '2026-09-08T22:12:31.039Z'
---

## Overview

n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the legacy expression engine generated source text by calling the mutable global JSON.stringify while printing synthetic string literals and interpolating timezone data. An expression could replace JSON.stringify and cause later generated source to contain executable attacker-controlled code. The affected code-generation paths include packages/@n8n/expression-runtime/src/bridge/isolated-vm-bridge.ts and packages/@n8n/tournament/src/ExpressionBuilder.ts, and the issue does not affect the vm expression engine. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.

## Affected

- `n8n < 1.123.76`
- `n8n >= 2.0.0, < 2.37.7`
- `n8n >= 2.38.0, < 2.38.2`

## Remediation

Upgrade past the affected range:

- `n8n 2.38.2`

## Package advisory (CVE-2026-86083)

Affected packages:

- `n8n < 1.123.76`
- `n8n >= 2.38.0, < 2.38.2`
- `n8n >= 2.0.0, < 2.37.7`

Patched in:

- `n8n 1.123.76`
- `n8n 2.38.2`
- `n8n 2.37.7`

Source: https://github.com/advisories/GHSA-6xcw-7xm6-48c6