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CVE-2026-21877

CVE-2026-21877 · n8n is vulnerable to Remote Code Execution via Arbitrary File Write

This page contains facts from public vulnerability sources. Check the original advisory before updating.

n8n is an open source workflow automation platform. In versions 0.121.2 and below, an authenticated attacker may be able to execute malicious code using the n8n service. This could result in full compromise and can impact both self-hosted and n8n Cloud instances. This issue is fixed in version 1.121.3. Administrators can reduce exposure by disabling the Git node and limiting access for untrusted users, but upgrading to the latest version is recommended.

CVSS 10.0 · Critical · EPSS 5.4% · Public exploit · Fix available

Published
Updated

Stack: node

Affected products and versions

  • n8n

    Versions
    • < 1.121.3: Affected

    No fix published

  • n8n npm

    Affected ranges
    • SEMVER: ≥ 0.123.0, < 1.121.3

    Update to 1.121.3

Original sources

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