CVE-2026-86074

High

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.

SeverityHigh
CVSS7.1
Exploit probability—
ProductN8n
PublishedSep 8, 2026
First seenSep 8, 2026

How to fix

Update
  • n8n n8n2.37.7, 2.38.2 or later
  • n8n2.38.2, 2.37.7 or later

Affected products

ProductAffected versionsFixed in
n8n n8nv < 2.37.7, 2.38.0 ≤ v < 2.38.22.37.7, 2.38.2
n8nnpm2.38.0 ≤ v < 2.38.2, v < 2.37.72.38.2, 2.37.7

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