CVE-2026-59207
Medium
Description
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.
SeverityMedium
CVSS6.5
Exploit probability—
Product
N8n
PublishedJul 9, 2026
First seenJul 9, 2026
Weakness typeCWE-693CWE-693
How to fix
Update
- n8n n8n2.27.4 or later
- n8n2.28.1, 2.27.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| n8n n8n | v < 2.27.4, 2.28.0 | 2.27.4 |
| n8nnpm | 2.28.0 ≤ v < 2.28.1, v < 2.27.4 | 2.28.1, 2.27.4 |
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