What is GHSA-wgjf-2hg5-2533?

GHSA-wgjf-2hg5-2533 is a security advisory published by GitHub Security Advisories with Medium severity. n8n before versions 1.123.18 and 2.6.2 fails to verify HMAC-SHA256 signatures on Zendesk webhooks...

Which CVE IDs does GHSA-wgjf-2hg5-2533 cover?

GHSA-wgjf-2hg5-2533 covers the following CVE IDs: CVE-2026-56360. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-wgjf-2hg5-2533?

GHSA-wgjf-2hg5-2533 has a CVSS v3 base score of 4.0, published by GitHub Security Advisories.

GHSA-wgjf-2hg5-2533MediumCVSS 4.0

n8n before versions 1.123.18 and 2.6.2 fails to verify HMAC-SHA256 signatures on Zendesk webhooks...

Vendor

GitHub Security Advisories

Published

July 8, 2026

Last Modified

July 8, 2026

🔗 CVE IDs covered (1)

CVE-2026-56360 →

📋 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.

🔗 References (4)

https://github.com/n8n-io/n8n/security/advisories/GHSA-38c7-23hj-2wgq
https://nvd.nist.gov/vuln/detail/CVE-2026-56360
https://www.vulncheck.com/advisories/n8n-webhook-forgery-via-unsigned-post-requests-in-zendesktrigger
https://github.com/advisories/GHSA-wgjf-2hg5-2533