CVE-2026-85165

published 2026-09-03

CVE-2026-85165: n8n versions before 2.36.2 contain an expression sandbox bypass vulnerability where free identifiers in spread, computed-key, switch-case, or class-extension…

Priority P3 53 critical 9.9 CVSS 3.1

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

n8n versions before 2.36.2 contain an expression sandbox bypass vulnerability where free identifiers in spread, computed-key, switch-case, or class-extension positions resolve against process globals. Authenticated users with workflow-edit permission can mutate host objects through expression evaluation, with changes persisting process-wide until restart.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
n8n-io	n8n	< 2.36.2	2.36.2
n8n-io	n8n	< 2.35.4	2.35.4
n8n	n8n	< 2.35.4	2.35.4
n8n	n8n	2.36.0 – 2.36.2	—

CVSS provenance

nvd v3.1 9.9 CRITICAL CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

nvd v4.0 7.2 HIGH CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/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-95