Is CVE-2026-56360 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-56360?

CVE-2026-56360 has a CVSS v3 severity of MEDIUM (4).

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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.