Medium 5.9Published Sep 8, 2026

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

Updated under an hour ago (Oct 28, 2026, 1:10 AM ET)

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It affects n8n-io n8n and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for n8n-io n8n

Exploited in the last 30 days

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.

CVSS: 5.9 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:L/SI:L/SA:N
Weakness (CWE): CWE-918
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Sep 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

n8n-io n8n n8n_io:n8n (from the name)	before 2.37.7; from 2.38.0, < 2.38.2	CNA record
n8n n8n n8n:n8n	before 2.37.7; from 2.38.0 before 2.38.2	NVD

References

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-q5wm-mgqx-fv2f	x-refsource-confirm, mitigation, vendor-advisory
https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7	x-refsource-misc, release-notes
https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.