CVE-2026-56360

MEDIUM SEVERITY

CVSS Score & Metrics

Base Score

4.0 / 10

Vector String

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

Vulnerability Description

n8n before versions 1.123.18 and 2.6.2 fails to verify HMAC-SHA256 signatures on Zendesk webhooks in the ZendeskTrigger node. Attackers who know the webhook URL can send unsigned POST requests to trigger workflows with arbitrary malicious data.

Vulnerability Details

Published Date

July 08, 2026

Last Modified

July 08, 2026

CWE ID

CWE-290

Source

NVD

Vendor

n8n

Product

n8n

External References

https://github.com/n8n-io/n8n/security/advisories/GHSA-38c7-23hj-2wgq
https://www.vulncheck.com/advisories/n8n-webhook-forgery-via-unsigned-post-requests-in-zendesktrigger

CVE-2026-56360

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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