CVE-2026-59206

published 2026-07-09

CVE-2026-59206: n8n is an open source workflow automation platform. Prior to 1.123.61, 2.27.4, and, 2.28.1, an authenticated user with the default workflow:create permission…

Priority P3 45 high 7.1 CVSS 3.1

AV N AC L PR L UI N S U C H I N A L

n8n is an open source workflow automation platform. Prior to 1.123.61, 2.27.4, and, 2.28.1, an authenticated user with the default workflow:create permission could pollute Object.prototype through a crafted workflow saved, updated, or imported via the workflow API, allowing unauthenticated requests to be treated as a privileged user and exposing user and project listing endpoints. This issue is fixed in versions 1.123.61, 2.27.4, and 2.28.1.

Affected

9 ranges

Vendor	Product	Version range	Fixed in
n8n-io	n8n	< 1.123.61	1.123.61
n8n-io	n8n	—	—
n8n-io	n8n	—	—
n8n	n8n	< 1.123.61	1.123.61
n8n	n8n	—	—
n8n	n8n	>= 0 < 1.123.61	1.123.61
n8n	n8n	>= 2.0.0 < 2.27.4	2.27.4
n8n	n8n	>= 2.0.0-rc.0 < 2.27.4	2.27.4
n8n	n8n	>= 2.28.0 < 2.28.1	2.28.1

CVSS provenance

nvd v3.1 7.1 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L

nvd v4.0 7.1 HIGH CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:L/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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CWE-1321