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GHSA-x2mw-7j39-93xq

n8n has Arbitrary Command Execution via File Write and Git Operations

Source: GitHub Advisory Database (reviewed) Critical CVE-2026-27498

Packages

EcosystemPackageAffectedFixed in
npm n8n < 1.123.8 1.123.8
npm n8n >= 2.0.0, < 2.2.0 2.2.0

Details

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

## 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.

References

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