Skip to content
HighVulnerability

GHSA-9pq8-m8gp-4p53: n8n: Python sandbox escape

Published
Record updated
View JSON
Affected
  • n8n >= 2.0.0-rc.0, < 2.21.8, fixed in 2.21.8, released May 27, 2026, 20 days before disclosure
  • n8n >= 2.22.0, < 2.22.4, fixed in 2.22.4, released May 27, 2026, 20 days before disclosure
  • n8n < 1.123.48, fixed in 1.123.48, released May 27, 2026, 20 days before disclosure
Known exploitation
Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS
0.4%

Summary

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. The issue affects only n8n instances where the Python Task Runner is enabled.

Mitigation

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. If upgrading is not immediately possible, limit workflow creation and editing permissions to fully trusted users only, and 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.