CVE-2026-42234 HIGH

CVE-2026-42234: n8n: Python Task Runner Sandbox Escape

Vendor N8N-Io
Product n8n
Weakness CWE-94 · Code injection
Published May 4, 2026
Last update May 5, 2026

CVSS base score

7.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

Description

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 arbitrary code execution on the task runner container. This issue only affects instances where the Python Task Runner is enabled. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.

Key dates

Disclosure timeline

May 4, 2026 CVE published
May 5, 2026 Record updated