CVE-2026-85165n8n before 2.36.2 Expression Sandbox Bypass via SpreadElement

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.

7.2 HIGHEPSS 0.57%Not in KEVNVD: Analyzed

Last updated: 2026-10-29 21:17 UTC

OverviewCVSS details

7.2HIGHCVSS 4.0

Score source: VulnCheck (CNA)
NVD status: Analyzed
Published: Sep 3, 2026
Assigner: VulnCheck

Affected

n8n (n8n-io)

Versions: 2.36.0 before 2.36.2
Fixed in: 2.36.2

+1 more product →

Exploitation

Public exploit: None listed
CISA KEV: Not listed
KEV due date: —
SSVC: Exploitation none · Automatable no · Impact total

EPSS · FIRST, scored Nov 7

0.57%chance of exploitation in 30 days

Higher than 47.55% of CVEs

CVSS 4.0 · VulnCheck (CNA)

7.2High

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

Attack vector: Network
Attack complexity: Low
Attack requirements: None
Privileges required: Low
User interaction: None
Confidentiality impact: Low
Integrity impact: High
Availability impact: High
Confidentiality (other systems): None
Integrity (other systems): None
Availability (other systems): None

CVSS 3.1 · NVD

9.9Critical

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack vector: Network
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Changed
Confidentiality impact: High
Integrity impact: High
Availability impact: High

NVD status: Analyzed

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
7.2	HIGH	4.0VulnCheck (CNA)	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
9.9	CRITICAL	3.1NVD	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Details

CVE ID: CVE-2026-85165
Status: Analyzed
Assigner (CNA): VulnCheck
Published: Sep 3, 2026
Last modified: 2026-10-29 21:17 UTC
Weaknesses: CWE-95 · Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 10:34 UTC.