---
title: "CVE-2026-27498: n8n has Arbitrary Command Execution via File Write and Git Operations"
url: https://erroneo.us/security/cve/CVE-2026-27498/
description: "CVE-2026-27498 (n8n (npm)): n8n is an open source workflow automation platform. Prior to versions 2.2.0 and 1.123.8, an authenticated user with permission…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-02-25
date_modified: 2026-02-27
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-27498"
kev: false
cvss: 9
epss: 0.01375
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-27498: n8n has Arbitrary Command Execution via File Write and Git Operations

**Signal:** Critical, preconditions apply. Severe if exploited, but exploitation needs conditions that may not apply to you. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 1.4% , percentile 72: FIRST’s model estimates a 1.4% chance of exploitation activity in the next 30 days, higher than 72% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Needs an account (low (any account)). Exposure depends on who can log in.
- Only applies if your dependency tree includes n8n (npm) < 1.123.8, fixed in 1.123.8 ; n8n (npm) >= 2.0.0, < 2.2.0, fixed in 2.2.0 . Check your lockfile, including transitive dependencies.

## What it is

n8n is an open source workflow automation platform. Prior to versions 2.2.0 and 1.123.8, an authenticated user with permission to create or modify workflows could chain the Read/Write Files from Disk node with git operations to achieve remote code execution. By writing to specific configuration files and then triggering a git operation, the attacker could execute arbitrary shell commands on the n8n host. The issue has been fixed in n8n versions 2.2.0 and 1.123.8. Users should upgrade to one of these versions or later to remediate the vulnerability. If upgrading is not immediately possible, administrators should consider the following temporary mitigations. Limit workflow creation and editing permissions to fully trusted users only, and/or disable the Read/Write Files from Disk node by adding n8n-nodes-base.readWriteFile to the NODESEXCLUDE environment variable. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

## Affected packages

- npm `n8n` < 1.123.8 → fixed: 1.123.8
- npm `n8n` >= 2.0.0, < 2.2.0 → fixed: 2.2.0

## Affected products (CVE record)

- n8n-io n8n: < 1.123.8, >= 2.0.0, < 2.2.0

## Severity

- GitHub_M CVSS 4.0: 9 `CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`
- GitHub CVSS 4.0: 9.0 `CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 1.38% probability of exploitation activity in the next 30 days; percentile 72.

## Sources

- [GitHub Advisory GHSA-x2mw-7j39-93xq](https://github.com/advisories/GHSA-x2mw-7j39-93xq)
- [CVE.org record CVE-2026-27498](https://www.cve.org/CVERecord?id=CVE-2026-27498)
- [NVD entry CVE-2026-27498](https://nvd.nist.gov/vuln/detail/CVE-2026-27498)
- [github.com](https://github.com/n8n-io/n8n/security/advisories/GHSA-x2mw-7j39-93xq)
- [github.com](https://github.com/n8n-io/n8n/commit/97365caf253978ba8e46d7bc53fa7ac3b6f67b32)
- [github.com](https://github.com/n8n-io/n8n/commit/e22acaab3dcb2004e5fe0bf9ef2db975bde61866)
- [github.com](https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.8)
- [github.com](https://github.com/n8n-io/n8n/releases/tag/n8n@2.2.0)

---
Source page: https://erroneo.us/security/cve/CVE-2026-27498/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt