CVE-2026-56360
n8n - Webhook Forgery via Unsigned POST Requests in ZendeskTrigger
CVSS Score
4.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-290 |
| Vendor | n8n |
| Product | n8n |
| Published | Jul 8, 2026 |
| Last Updated | Jul 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None
Affected Versions
n8n / n8n
0 < 1.123.18 2.0.0 < 2.6.2
References
Credits
🔍 nkoorty 🔍 jjjutla