CVE-2026-21893Network attack vector

Admin command execution via unvalidated package version

Published Feb 4, 2026 · Updated Feb 4, 2026

OS command injection in n8n 0.187.0 through 1.120.2 allows remote authenticated users to execute commands on the host. The community-package controller accepted install and update version values without semantic-version validation, so shell metacharacters could alter the package command sent to npm. Exploitation requires administrative permission to install third-party community packages and grants command execution in the n8n host context.

CVSS severity7.2
High
EPSS probability1.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in n8n 0.187.0 through 1.120.2 allows remote authenticated users to execute commands on the host. The community-package controller accepted install and update version values without semantic-version validation, so shell metacharacters could alter the package command sent to npm. Exploitation requires administrative permission to install third-party community packages and grants command execution in the n8n host context.

The record

CVE
CVE-2026-21893
Published
Feb 4, 2026
Updated
Feb 4, 2026
Vendor
n8n
Product
n8n
Classifications
CWE-78, CWE-20, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Feb 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 0.187.0, < 1.120.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

n8n · n8nversion=>= 0.187.0, < 1.120.3

Published CVSS scores

9.4GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
7.2NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-20Improper Input Validation
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

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