CVE-2026-72749

MediumCVSS 6.5/10Last modified Oct 29, 2026

Description

n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the Edit Fields (Set) node. The node assigns output fields via a dot-notation path setter without restricting the field name, allowing an authenticated user to name a field after an inherited built-in method path and corrupt a shared global in the main Node.js process. Because that global is used on the request-authentication path, the instance then fails every authenticated request, causing an instance-wide denial of service for all users until the process is restarted.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-1321

Affected software

Vendor	Product	Versions
n8n-io	n8n	< 1.123.67
n8n-io	n8n	>= 2.32.0, < 2.32.1
n8n-io	n8n	>= 2.0.0-rc.0, < 2.31.5

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-xwx6-jjhv-84p8Mitigation, Vendor Advisory
https://www.vulncheck.com/advisories/n8n-before-prototype-pollution-via-edit-fieldsThird Party Advisory

Timeline

Published: Aug 11, 2026
Last modified: Oct 29, 2026
NVD status: Analyzed

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