Skip to content
CVE PROGRAM SOURCE RECORD6.3 Medium

CVE-2026-56357

n8n - Webhook Forgery via Missing HMAC-SHA256 Signature Verification in GitHub Webhook Trigger

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
VulnCheck

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

n8n n8n

Default version status: unaffected

  • 0 to < 1.123.15affected
  • 1.123.15unaffected
  • 2.0.0 to < 2.5.0affected
  • 2.5.0unaffected
pkg:npm/n8n

References