CVE-2026-85165

n8n before 2.36.2 Expression Sandbox Bypass via SpreadElement

State: Published
Severity: 7.2 High
Published: Sep 3, 2026
Updated: Oct 29, 2026
Reserved: Sep 3, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	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	VulnCheck

Weaknesses

CWE-95 Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')

Affected Products

Product	Versions
n8nn8n-io	2.36.0 to before 2.36.2Affected 2.36.2Not affected
n8nn8n-io	before 2.35.4Affected 2.35.4Not affected

References

GitHub Security Advisory (GHSA-fg85-4wv2-p98j)vendor-advisory
VulnCheck Advisory: n8n before 2.36.2 Expression Sandbox Bypass via SpreadElementthird-party-advisory

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