Vulnerability in N8n
CVE-2026-59207
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (36.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- N8n — versions 2.28.0
- N8n-Io N8n — versions >= 2.28.0, < 2.28.1, < 2.27.4
Weakness classification (CWE)
References
- github.com/n8n-io/n8n/security/advisories/GHSA-h44j-f5r5-ph73 (Vendor Advisory)
- github.com/n8n-io/n8n/releases/tag/n8n@2.27.4 (Release Notes)
- github.com/n8n-io/n8n/releases/tag/n8n@2.28.1 (Release Notes)
Frequently asked questions
- What is CVE-2026-59207?
- CVE-2026-59207 is a medium-severity vulnerability in N8n, classified under Protection Mechanism Failure. CVSS score: 6.5/10. Published 2026-07-09.
- How severe is CVE-2026-59207?
- Medium severity. CVSS v3 base score is 6.5 out of 10.