n8n — Command Injection (CVE-2026-21893)
Date: 2026-02
Affected: n8n/n8n
Attack vector: command-injection
Category: vulnerability-disclosure
Severity: High
CVE: CVE-2026-21893
CWE: CWE-20
CWE-78
CVSS: 7.2 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)

n8n is an open source workflow automation platform. From version 0.187.0 to before 1.120.3, a command injection vulnerability was identified in n8n’s community package installation functionality. The issue allowed authenticated users with administrative permissions to execute arbitrary system commands on the n8n host under specific conditions. This issue has been patched in version 1.120.3.


Mitigations:

Architectural layers (MAESTRO):