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GHSA-44v6-jhgm-p3m4

n8n has a Python Task Runner Sandbox Escape Vulnerability

Source: GitHub Advisory Database (reviewed) High CVE-2026-42234

Packages

EcosystemPackageAffectedFixed in
npm n8n < 1.123.32 1.123.32
npm n8n >= 2.18.0, < 2.18.1 2.18.1
npm n8n >= 2.17.0, < 2.17.4 2.17.4

Details

As written in the advisory (Markdown source, shown as plain text).

## Impact 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. ## Patches The issue has been fixed in n8n versions 1.123.32, 2.17.4, and 2.18.1. Users should upgrade to one of these versions or later to remediate the vulnerability. ## Workarounds If upgrading is not immediately possible, administrators should consider the following temporary mitigations: - Limit workflow creation and editing permissions to fully trusted users only. - Disable the Python Code node by adding `n8n-nodes-base.code` to the `NODES_EXCLUDE` environment variable, or disable the Python Task Runner entirely. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

References

External links from the advisory. They lead to third-party sites.