CVE-2026-42234

n8n: Python Task Runner Sandbox Escape

State: Published
Severity: 7.1 High
Published: May 4, 2026
Updated: May 5, 2026
Reserved: Apr 25, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	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	GitHub_M

Weaknesses

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

Affected Products

Product	Versions
n8nn8n-io	< 1.123.32Affected >= 2.17.0, < 2.17.4Affected >= 2.18.0, < 2.18.1Affected

References

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

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