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…

PriorityP343medium6.5CVSS 3.1

AVNACLPRLUINSUCHINAN

EPSS

0.45%

36.4th percentile

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

6 ranges

Vendor	Product	Version range	Fixed in
n8n-io	n8n	< 2.27.4	2.27.4
n8n-io	n8n	—	—
n8n	n8n	< 2.27.4	2.27.4
n8n	n8n	—	—
n8n	n8n	>= 0 < 2.27.4	2.27.4
n8n	n8n	>= 2.28.0 < 2.28.1	2.28.1

CVSS provenance

nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

nvdv4.07.1HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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