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VULNERABILITIES

CVE-2026-85169 Details

Description

n8n versions before 1.123.73, 2.35.4, and 2.36.2 contain an expression sandbox escape in the $fromAI handler. $fromAI resolved a caller-supplied placeholder name without requiring it to be an own property and admitted reserved keys; against a primitive input value it returned a live host-prototype reference. An attacker with workflow-build privilege can walk the prototype chain to the Function constructor and compile/execute arbitrary code in the main n8n process, leading to remote code execution.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:8.8 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/n8n-io/n8n/security/advisories/GHSA-9x83-43r8-5hwc [email protected]MitigationVendor Advisory
https://www.vulncheck.com/advisories/n8n-before-1.123.73-remote-code-execution-via-fromai-prototype-leak [email protected]Third Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-94Improper Control of Generation of Code ('Code Injection')[email protected]

Affected Products

ProductVersions
n8n n8n
< 1.123.73
>= 2.0.0, < 2.35.4
>= 2.36.0, < 2.36.2

CPE

  • cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-85169
NVD Published Date:
Sep 3, 2026
NVD Last Modified:
Sep 18, 2026
Source:
[email protected]
CVE-2026-85169 Details - Not Deferred