What is CVE-2026-42234?

CVE-2026-42234 is a high-severity vulnerability in N8n, classified under Code Injection. CVSS score: 8.8/10. Published 2026-05-04.

How severe is CVE-2026-42234?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in N8n

CVE-2026-42234

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 containing a Python Code Node could escape the sandbox and achieve arbi…

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.001 (24.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

N8n — versions 2.18.0
N8n-io N8n — versions < 1.123.32, >= 2.17.0, < 2.17.4, >= 2.18.0, < 2.18.1

Weakness classification (CWE)

CWE-94 — Code Injection

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-44v6-jhgm-p3m4 (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2026-42234?: CVE-2026-42234 is a high-severity vulnerability in N8n, classified under Code Injection. CVSS score: 8.8/10. Published 2026-05-04.
How severe is CVE-2026-42234?: High severity. CVSS v3 base score is 8.8 out of 10.