---
title: "CVE-2026-42232: n8n has XML Node Prototype Pollution that to RCE"
url: https://erroneo.us/security/cve/CVE-2026-42232/
description: "CVE-2026-42232 (n8n (npm)): n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, an authenticated user with…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-05-04
date_modified: 2026-05-08
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-42232"
kev: false
cvss: 9.4
epss: 0.00529
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-42232: n8n has XML Node Prototype Pollution that to RCE

**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 0.5% , percentile 44: FIRST’s model estimates a 0.5% chance of exploitation activity in the next 30 days, higher than 44% of all scored CVEs (low). 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) >= 2.18.0, < 2.18.1, fixed in 2.18.1 ; n8n (npm) >= 2.17.0, < 2.17.4, fixed in 2.17.4 ; n8n (npm) < 1.123.32, fixed in 1.123.32 . Check your lockfile, including transitive dependencies.

## What it is

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, an authenticated user with permission to create or modify workflows could achieve global prototype pollution via the XML Node leading to RCE when combined with other nodes exploiting the prototype pollution. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.

## Affected packages

- npm `n8n` >= 2.18.0, < 2.18.1 → fixed: 2.18.1
- npm `n8n` >= 2.17.0, < 2.17.4 → fixed: 2.17.4
- npm `n8n` < 1.123.32 → fixed: 1.123.32

## Affected products (CVE record)

- n8n-io n8n: < 1.123.32, >= 2.17.0, < 2.17.4, >= 2.18.0, < 2.18.1

## Severity

- GitHub_M CVSS 4.0: 9.4 `CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L`
- GitHub CVSS 4.0: 9.4 `CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L`

## 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): 0.53% probability of exploitation activity in the next 30 days; percentile 44.

## Sources

- [GitHub Advisory GHSA-hqr4-h3xv-9m3r](https://github.com/advisories/GHSA-hqr4-h3xv-9m3r)
- [CVE.org record CVE-2026-42232](https://www.cve.org/CVERecord?id=CVE-2026-42232)
- [NVD entry CVE-2026-42232](https://nvd.nist.gov/vuln/detail/CVE-2026-42232)
- [github.com](https://github.com/n8n-io/n8n/security/advisories/GHSA-hqr4-h3xv-9m3r)

---
Source page: https://erroneo.us/security/cve/CVE-2026-42232/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt