CVE-2026-56360: n8n before 1.123.18 (exclusive), from 2.0.0 (inclusive), before 2.6.2 (exclusive), 0 to before 1.123.18, 2.0.0 to…

CVE-2026-56360. CVSS 3.1 base score 4.0 (MEDIUM, Vendor/CNA). EPSS 0.00314 (percentile 0.24051), scored 25-Oct-2026.

Affected technology

n8n · before 1.123.18 (exclusive)
n8n

n8n · from 2.0.0 (inclusive), before 2.6.2 (exclusive)
n8n

n8n · 0 to before 1.123.18, 2.0.0 to before 2.6.2
n8n

Description’s affected range: before versions 1.123.18 and 2.6.2 fails to verify HMAC-SHA256 signatures on Zendesk webhooks in the ZendeskTrigger node

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Vendor/CNA’s CVSS 4.0 assessment (base score 6.3/10) rates confidentiality and availability impact as none; integrity impact as low. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 25-Oct-2026 21:45 UTC

CWE: CWE-290
CCR priority: 16.1 /100 (P5)
CVSS 3.1: 4.0 /10 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N · Vendor/CNA
EPSS: 0.00314 · percentile 0.24051 · 2026-10-25
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-25 21:44:36.062275+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-56360.html