AI agent vulnerability · n8n

CVE-2026-49444: n8n: Python sandbox escape

highCVSS 4.0 7.1 · 3.1 8.5GHSA-9pq8-m8gp-4p53

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 1.123.48, 2.21.8, and 2.22.4.

Published Jun 16, 2026 · Updated Jul 20, 2026

Affected packages

n8n

Ecosystem: npm
Affected: < 1.123.48
Fixed in: 1.123.48
Check: npm ls n8n

n8n

Ecosystem: npm
Affected: >= 2.22.0, < 2.22.4
Fixed in: 2.22.4
Check: npm ls n8n

n8n

Ecosystem: npm
Affected: >= 2.0.0-rc.0, < 2.21.8
Fixed in: 2.21.8
Check: npm ls n8n

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

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 1.123.48, 2.21.8, and 2.22.4. 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.

Credited to vipinxsec.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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