Is this vulnerability remotely exploitable over the network?

Yes, but it typically requires a valid authenticated session. An attacker who can reach the n8n instance over the network and authenticate with sufficient permissions to create or edit workflows can exploit the issue remotely.

Does an attacker need administrative privileges to exploit this?

Not necessarily. Any account that can create, import, or modify workflows containing expressions may be sufficient, depending on how permissions are configured. In multi-user deployments, even non-admin roles with workflow authoring capabilities could potentially exploit the flaw.

What is the safest general fix pattern?

The most robust fix is to redesign the expression evaluation system so that user-supplied expressions are executed in a strictly limited sandbox or declarative environment that cannot access general-purpose runtime APIs. This often means replacing generic dynamic evaluation with a constrained expression language or interpreter that exposes only the functions required by workflows.

Severity:

CRITICAL RISK

(9.9)

Improper Expression Evaluation (CWE-95) Leading to RCE in n8n Workflow Engine

CVE-2026-1470

Published:

Jan 27, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Code Injection / Improper Input Evaluation

CWE:

CWE-95

Impact:

Remote Code Execution with n8n Process Privileges

Severity:

CRITICAL RISK

(9.9)

CVSS Version:

3.1

Vulnerability Type

Category:

Code Injection / Improper Input Evaluation

CWE:

CWE-95

Impact:

Remote Code Execution with n8n Process Privileges

Severity:

CRITICAL RISK

(9.9)

CVSS Version:

3.1

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Improper Expression Evaluation (CWE-95) Leading to RCE in n8n Workflow Engine

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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