CVE-2026-42234

HIGH

n8n: Python Task Runner Sandbox Escape

Title source: cna
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 8.8
EPSS 0.0008
EPSS Percentile 24.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-94
Status published
Products (8)
n8n/n8n 2.18.0
n8n/n8n < 1.123.32
n8n-io/n8n < 1.123.32
n8n-io/n8n >= 2.17.0, < 2.17.4
n8n-io/n8n >= 2.18.0, < 2.18.1
npm/n8n 0 - 1.123.32npm
npm/n8n 2.17.0 - 2.17.4npm
npm/n8n 2.18.0 - 2.18.1npm
Published May 04, 2026
Tracked Since May 05, 2026