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AI agent vulnerability · n8n

CVE-2026-27498: n8n has Arbitrary Command Execution via File Write and Git Operations

criticalCVSS 4.0 9.0 · 3.1 8.5GHSA-x2mw-7j39-93xq

Impact An authenticated user with permission to create or modify workflows could chain the Read/Write Files from Disk node with git operations to achieve remote code execution. By writing to specific configuration files and then triggering a git operation, the attacker could execute arbitrary shell commands on the n8n host. Patches The issue has been fixed in n8n versions 2.2.0 and 1.123.8.

Published Feb 25, 2026 · Updated Feb 27, 2026

Affected packages

n8n

Ecosystem
npm
Affected
< 1.123.8
Fixed in
1.123.8
Check
npm ls n8n

n8n

Ecosystem
npm
Affected
>= 2.0.0, < 2.2.0
Fixed in
2.2.0
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 could chain the Read/Write Files from Disk node with git operations to achieve remote code execution. By writing to specific configuration files and then triggering a git operation, the attacker could execute arbitrary shell commands on the n8n host.

Patches

The issue has been fixed in n8n versions 2.2.0 and 1.123.8. 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 Read/Write Files from Disk node by adding n8n-nodes-base.readWriteFile to the NODES_EXCLUDE environment variable.

These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

Credited to fatihhcelik.

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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