n8n-io n8n up to 2.37.6/2.38.1 Instance AI Credential Setup credential-utils.ts redirect

Summaryinfo

A vulnerability was found in n8n-io n8n up to 2.37.6/2.38.1. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file packages/@n8n/instance-ai/src/tools/workflows/credential-utils.ts of the component Instance AI Credential Setup. Such manipulation leads to redirect. This vulnerability is referenced as CVE-2026-86074. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in n8n-io n8n up to 2.37.6/2.38.1. Affected by this issue is some unknown processing of the file packages/@n8n/instance-ai/src/tools/workflows/credential-utils.ts of the component Instance AI Credential Setup. The manipulation with an unknown input leads to a redirect vulnerability. Using CWE to declare the problem leads to CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. Impacted is integrity. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-86074 since 09/04/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1204.001 by the MITRE ATT&CK project.

Upgrading to version 2.37.7 or 2.38.2 eliminates this vulnerability.

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Productinfo

Vendor

• n8n-io

Name

• n8n

Version

• 2.37.0
• 2.37.1
• 2.37.2
• 2.37.3
• 2.37.4
• 2.37.5
• 2.37.6
• 2.38.0
• 2.38.1

Website

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

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