Vulnerability Monitor

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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.

Published

2026-01-08T01:15:55.697

Last Modified

2026-01-20T15:08:24.850

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 9.9 (CRITICAL)

Weaknesses
  • Type: Primary
    CWE-94
    CWE-434
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application n8n n8n < 1.121.3 Yes
References