CVE-2026-59207

n8n: "Allowed HTTP Request Domains" Restriction Bypass via AI Agents MCP Connector

Published Jul 9, 2026 CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-h44j-f5r5-ph73 n8n: "Allowed HTTP Request Domains" Restriction Bypass via AI Agents MCP Connector
History
Type Values Removed Values Added
First Time appeared N8n
N8n n8n
Vendors & Products N8n
N8n n8n
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title n8n: "Allowed HTTP Request Domains" Restriction Bypass via AI Agents MCP Connector
Weaknesses CWE-693
References
Metrics cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jul 9, 2026, 3:51 PM
Reserved
Jul 2, 2026, 9:05 PM
Status
Analyzed
Published
Jul 9, 2026, 4:16 PM
Modified
Oct 25, 2026, 5:10 PM