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bdu:2026-00916

EUVD-2026-265211

fkie_cve-2026-21877

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.

GHSA-v364-rw7m-3263 — n8n Vulnerable to RCE via Arbitrary File Write

Affected: npm: n8n

### Impact n8n is affected by an authenticated Remote Code Execution (RCE) vulnerability.

Under certain conditions, an authenticated user may be able to cause untrusted code to be executed by the n8n service. This could result in full compromise of the affected instance.

Both self-hosted and n8n Cloud instances are impacted.

### Patches The issue has been resolved in n8n version 1.121.3.

Users are advised to upgrade to this version or later to fully address the vulnerability.

### Workarounds If upgrading is not immediately possible, administrators can reduce exposure by disabling the Git node and limiting access for untrusted users.

### References - n8n documentation: [Blocking access to nodes](https://docs.n8n.io/hosting/securing/blocking-nodes/)

WID-SEC-W-2026-0025 — n8n: Schwachstelle ermöglicht Codeausführung

Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in n8n ausnutzen, um beliebigen Programmcode auszuführen.