Is this vulnerability remotely exploitable?

Yes, but only by authenticated users who can create or modify workflows. A remote attacker who obtains such an account (for example via credential theft or phishing) can exploit the vulnerability through the n8n UI or API.

What level of access does an attacker need?

The attacker needs an n8n account with permissions to create, edit, or configure workflows that use the Merge node. They do not require shell access to the server or direct database credentials; the attack is performed entirely via workflow configuration.

What is the safest general fix pattern?

The most robust fix is to ensure that any workflow-driven SQL or code is strictly parameterized and never constructed by concatenating user-controlled strings. Additionally, high-impact node capabilities (SQL, file I/O, code-like expressions) should be tightly scoped, validated, and guarded by granular authorization.

Severity:

HIGH RISK

(8.8)

SQL Injection to Remote Code Execution (CWE-89, CWE-94) via Merge Node in n8n Workflows

CVE-2026-27497

Published:

Feb 25, 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-78

CRITICAL RISK

CRITICAL

(9.9)

Command Injection in MCP Stdio Configuration Validation (CWE-78) in WeKnora

Remote Code Execution

March 7, 2026

CWE-89

CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Remote Code Execution via SQL Injection on the Database Server

March 7, 2026

Vulnerability Type

Category:

SQL Injection Leading to Remote Code Execution

CWE:

CWE-89;CWE-94

Impact:

Authenticated Remote Code Execution and Arbitrary File Write on the n8n Server

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Vulnerability Type

Category:

SQL Injection Leading to Remote Code Execution

CWE:

CWE-89;CWE-94

Impact:

Authenticated Remote Code Execution and Arbitrary File Write on the n8n Server

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

Detect vulnerable code directly in pull requests, so CVEs are fixed before merge.

Get Started

Ship clean & secure code faster

START 14 DAYS FREE TRIAL

BOOK A DEMO

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

SQL Injection to Remote Code Execution (CWE-89, CWE-94) via Merge Node in n8n Workflows

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

CRITICAL RISK

CRITICAL

(9.9)

Command Injection in MCP Stdio Configuration Validation (CWE-78) in WeKnora

CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Product

Pricing

Company

Legal

Developers

Compare

Product

Pricing

Company

Legal

Developers

Compare

Product

Pricing

Company

Legal

Developers

Compare