high7.1
CVE-2026-86074
n8n: Instance AI Credential Setup Accepts Unvalidated Probe URL from Fetched Content
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | n8n | >= 2.38.0, < 2.38.2 | 2.38.2 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| N8n | N8n | before 2.37.7 from 2.38.0 before 2.38.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-q5wm-mgqx-fv2f
- https://github.com/n8n-io/n8n/security/advisories/GHSA-q5wm-mgqx-fv2f
- https://nvd.nist.gov/vuln/detail/CVE-2026-86074
- https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7
- https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2