CVE-2026-42234 PUBLISHED

n8n: Python Task Runner Sandbox Escape

Assigner: GitHub_M
Reserved: 25.04.2026 Published: 04.05.2026 Updated: 05.05.2026

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.

Metrics

CVSS 4.0

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
CVSS Score: 7.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	n8n-io
Product	n8n
Versions	Version < 1.123.32 is affected Version >= 2.17.0, < 2.17.4 is affected Version >= 2.18.0, < 2.18.1 is affected

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-44v6-jhgm-p3m4

Problem Types

CWE-94: Improper Control of Generation of Code ('Code Injection') CWE