CVE-2026-85165: n8n

Critical severity, CVSS 9.9. EPSS: 0.6% chance of exploitation in the next 30 days.

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 products

• n8n n8n: before 2.35.4 (fixed in 2.35.4); from 2.36.0, up to and including 2.36.2

Published 2026-09-03. Last modified 2026-09-10.