CVE-2026-86074

n8n: Instance AI Credential Setup Accepts Unvalidated Probe URL from Fetched Content

Published: Sep 8, 2026Updated: Sep 11, 2026 Sources: CVE List NVDCWE-918

7.1HIGH

Description

n8n is an open source workflow automation platform. Prior to 2.37.7 and 2.38.2, the Instance AI credential setup flow accepted a credential test or verification URL without checking that it matched the workflow node's origin. Attacker-controlled fetched content could influence that URL after a user injected it into the setup flow, causing authenticated requests, redirects, or probes to reach another origin. The affected logic includes packages/@n8n/instance-ai/src/tools/workflows/credential-utils.ts and the extractServiceOrigin origin derivation. This issue is fixed in versions 2.37.7 and 2.38.2.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:RUser Interaction

Required

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:LIntegrity

Low

A:NAvailability

None

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Weaknesses

CWE-918

Affected Products

n8n-io

commercial·DEaka n8n

n8nOn-premWeb App

Cloud & SaaS / container-orchestration

n8n

oss-project

n8nSaaSWeb App

Cloud & SaaS / saas-application

Exploitability

Workaround Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Command and Control

Initial Access

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References

https://github.com/n8n-io/n8n/security/advisories/GHSA-q5wm-mgqx-fv2f

github.com

https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7

github.com

https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2

github.com

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