CVE-2026-56360 — n8n - Webhook Forgery via Unsigned POST Requests in ZendeskTrigger
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 unsigne…
Published: 2026-07-08 · CVSS: 6.3 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7