TI-2026-26103 Aliases CVE-2026-33724 GHSA-43v7-fp2v-68f6

n8n's Source Control SSH Configuration Uses StrictHostKeyChecking=no

LOW 28CWE-639Published 2026-03-25 · Updated 2026-03-25

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Attack requirements: Present
Impact type: Security bypass
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-639.

Summary

n8n is an open source workflow automation platform. Prior to version 2.5.0, when the Source Control feature is configured to use SSH, the SSH command used for git operations explicitly disabled host key verification. A network attacker positioned between the n8n instance and the remote Git server could intercept the connection and present a fraudulent host key, potentially injecting malicious content into workflows or intercepting repository data. This issue only affects instances where the Source Control feature has been explicitly enabled and configured to use SSH (non-default). The issue has been fixed in n8n version 2.5.0. Users should upgrade to this version or later to remediate the vulnerability. If upgrading is not immediately possible, administrators should consider the following temporary mitigations: Disable the Source Control feature if it is not actively required, and/or restrict network access to ensure the n8n instance communicates with the Git server only over trusted, controlled network paths. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00293 22nd percentileScored 2026-11-07

Fix Fixed n8n (n8n-io): 2.5.0n8n (npm): 2.5.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
n8n	n8n	before 2.5.0	2.5.0	Patch available	CNA
—	n8n (npm)	before 2.5.0	2.5.0	Patch available	GHSA-43v7-fp2v-68f6

n8n Vendorn8n Affected before 2.5.0 Fixed in 2.5.0 Patch available CNA
n8n (npm) Vendor— Affected before 2.5.0 Fixed in 2.5.0 Patch available GHSA-43v7-fp2v-68f6

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:n8n:n8n::::::node.js::*	before 2.5.0	Vulnerable	n8n

cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:* Versions before 2.5.0 Vulnerable ·n8n

Remediation

Fix · CNA n8n (n8n-io) Fixed in 2.5.0
Fix · GHSA-43v7-fp2v-68f6 n8n (npm) Fixed in 2.5.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-33724
2026-10-03 Alias added: GHSA-43v7-fp2v-68f6

References

Advisory 2

Other 1

https://github.com/n8n-io/n8n

TI-2025-42131 n8n Vulnerable to Remote Code Execution via Expression Injection KEVCVSS 3.1CRITICAL 10.0
TI-2026-17560 n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling CVSS 3.1CRITICAL 10.0
TI-2026-01167 Authenticated users can bypass the Expression sandbox mechanism to achieve full remote… CVSS 3.1CRITICAL 9.9
TI-2026-00644 Sandbox escape in n8n Python task runner allows for arbitrary code execution on the underlying host. CVSS 3.1CRITICAL 9.9
TI-2025-35293 An arbitrary file upload vulnerability in the Chat Trigger component of N8N v1.95.3… CVSS 3.1HIGH 8.8
TI-2023-12275 The n8n package 0.218.0 for Node.js allows Escalation of Privileges. CVSS 3.1HIGH 8.8

See all 178 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences