Is this vulnerability remotely exploitable?

Yes, but only by an attacker who can position themselves on the network path between the n8n instance and the remote Git server (for example, on an untrusted network segment, compromised gateway, or malicious Wi-Fi). Without that network position, the risk is significantly reduced.

What level of access does an attacker need to exploit this issue?

The attacker does not need credentials to n8n or the Git server, but they do need the ability to intercept or redirect SSH traffic between them. This typically means control over some portion of the network, DNS, or routing infrastructure.

What is the safest general fix pattern?

The most robust fix pattern is to enforce strict SSH host key verification for all Git operations and ensure that only trusted host keys are accepted. This should be combined with secure configuration of the Source Control feature and limitation of which Git servers can be used.

Severity:

HIGH RISK

(7.4)

Improper SSH Host Verification (CWE-639-misclassified) in n8n Source Control over Git SSH

CVE-2026-33724

Published:

Mar 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-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:

Improper Authentication / Host Verification Failure

CWE:

CWE-639

Impact:

Man-in-the-Middle Attack on Git over SSH Leading to Workflow Tampering and Data Exposure

Severity:

HIGH RISK

(7.4)

CVSS Version:

3.1

Vulnerability Type

Category:

Improper Authentication / Host Verification Failure

CWE:

CWE-639

Impact:

Man-in-the-Middle Attack on Git over SSH Leading to Workflow Tampering and Data Exposure

Severity:

HIGH RISK

(7.4)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

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355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Improper SSH Host Verification (CWE-639-misclassified) in n8n Source Control over Git SSH

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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