EUVD-2026-27109
GHSA-44v6-jhgm-p3m4
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
7DescriptionNVD
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.codeto theNODES_EXCLUDEenvironment 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.
AnalysisAI
Sandbox escape in n8n's Python Task Runner enables authenticated workflow editors to execute arbitrary code on the task runner container. This vulnerability (CWE-94: Improper Control of Generation of Code) affects n8n instances with the Python Code Node feature enabled, allowing attackers with workflow creation/modification permissions to break out of the Python sandbox. …
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RemediationAI
Within 24 hours: inventory all n8n instances and confirm Python Code Node enablement status. Within 7 days: upgrade affected instances to vendor-released patch versions 1.123.32, 2.17.4, or 2.18.1 (select based on current major version). …
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External POC / Exploit Code
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