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CVE-2026-21893

CRITICAL CVSS 4.0: 9.4 EPSS 0.25%
Updated Feb 05, 2026
n8n
Parameter Value
CVSS 9.4 (CRITICAL)
Affected Versions before 1.120.3
Fixed In 1.120.3
Type CWE-20 (Improper Input Validation), CWE-78 (OS Command Injection)
Vendor n8n
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0