CVE-2026-42234: n8n

High severity, CVSS 8.8. EPSS: 0.7% chance of exploitation in the next 30 days.

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.

Affected products

• n8n n8n: before 1.123.32 (fixed in 1.123.32); from 2.17.0, before 2.17.4 (fixed in 2.17.4); version 2.18.0 only

Published 2026-05-04. Last modified 2026-06-17.