Medium · CVSS 0.0CVE-2026-86074GHSA-Q5WM-MGQX-FV2F

n8n: Instance AI Credential Setup Accepts Unvalidated Probe URL from Fetched ContentCVE-2026-86074

Answer in brief

CVE-2026-86074 records a Medium severity (CVSS 0.0) vulnerability in n8n: Instance AI Credential Setup Accepts Unvalidated Probe URL from Fetched Content. The current sources do not mark it as known exploited. The current feed maps n8n-io/n8n (generic), n8n (npm), n8n (npm). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 8, 2026Updated Sep 11, 2026Source checked Oct 25, 2026First seen by HOL Sep 8, 2026Material review Sep 11, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 0.0
Exploitation: Not marked as known exploited
Affected software: 4 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 0.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps n8n-io/n8n (generic), n8n (npm), n8n (npm). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:a:n8n:n8n::::::node.js::*	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
n8n-io/n8ngeneric	< 2.37.7 \|\| >= 2.38.0, < 2.38.2	Not reported
n8nnpm	>=2.38.0,<2.38.2	2.38.2
n8nnpm	<2.37.7	2.37.7

Recommended response

Check inventory. Check lockfiles and deployed manifests for n8n-io/n8n, n8n, n8n.
Review the reported fix. Update n8n to 2.38.2; n8n to 2.37.7 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 8, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Affected scope and exposure questions

The current feed maps n8n-io/n8n (generic), n8n (npm), n8n (npm). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:a:n8n:n8n::::::node.js::*	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
n8n-io/n8ngeneric	< 2.37.7 \|\| >= 2.38.0, < 2.38.2	Not reported
n8nnpm	>=2.38.0,<2.38.2	2.38.2
n8nnpm	<2.37.7	2.37.7

Sources and claim methodology

Upstream source description

Quoted source text, attributed separately from HOL analysis.