high7.1
CVE-2026-59207
n8n: "Allowed HTTP Request Domains" Restriction Bypass via AI Agents MCP Connector
Impact
n8n is an open source workflow automation platform. Prior to 2.27.4 and 2.28.1, the AI Agents feature did not enforce the Allowed HTTP Request Domains restriction configured on credentials when an MCP tool was pointed at an arbitrary URL, allowing a member-level user with use-only access to a shared credential to send its secret to an external server they control. This issue is fixed in versions 2.27.4 and 2.28.1.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | n8n | >= 2.28.0, < 2.28.1 | 2.28.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| N8n | N8n | before 2.27.4 Version 2.28.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-h44j-f5r5-ph73
- https://github.com/n8n-io/n8n/security/advisories/GHSA-h44j-f5r5-ph73
- https://nvd.nist.gov/vuln/detail/CVE-2026-59207
- https://github.com/n8n-io/n8n/releases/tag/n8n%402.27.4
- https://github.com/n8n-io/n8n/releases/tag/n8n%402.28.1