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.
History

Tue, 11 Aug 2026 12:30:00 +0000

Type Values Removed Values Added
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.
Title n8n before 1.123.67 Prototype Pollution via Edit Fields
First Time appeared N8n
N8n n8n
Weaknesses CWE-1321
CPEs cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*
Vendors & Products N8n
N8n n8n
References
Metrics cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-11T12:17:02.774Z

Reserved: 2026-08-10T13:53:42.482Z

Link: CVE-2026-72749

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-11T13:19:05.960

Modified: 2026-08-11T13:19:05.960

Link: CVE-2026-72749

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.