User Impersonation

Overview n8n is a n8n Workflow Automation Tool Affected versions of this package are vulnerable to User Impersonation in the ZendeskTrigger node, which does not validate the HMAC-SHA256 signature on incoming webhook requests from Zendesk. An attacker can trigger workflows with forged payloads by...

CVE-2026-56360

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...