PT-2026-56437 · N8N · N8N

Jjjutla + 1 · Publicado 2026-07-08 · Atualizado 2026-07-08 · CVE-2026-56360

Mitre

CVSS v3.1

4.0

Média

Vetor base

AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

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.

Correção

Authentication Bypass by Spoofing

Enumeração de Fraquezas

CWE-290

Identificadores relacionados

CVE-2026-56360

Produtos afetados

N8N

Referências · 3

• https://github.com/n8n-io/n8n/security/advisories/GHSA-38c7-23hj-2wgq · Aviso do Fabricante
• https://vulncheck.com/advisories/n8n-webhook-forgery-via-unsigned-post-requests-in-zendesktrigger · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-56360 · Nota de Segurança