Security Advisory

CVE-2026-56357

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-22 21:04:52

Last updated 2026-06-23 14:25:03

Assigner VulnCheck

CVSS score 6.3

State PUBLISHED

Description

n8n before 1.123.15 and 2.5.0 contains a webhook forgery vulnerability in the GitHub Webhook Trigger node that fails to implement HMAC-SHA256 signature verification. Attackers who know the webhook URL can send unsigned POST requests to trigger workflows with arbitrary data, spoofing GitHub webhook events.

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