CVE-2026-103245

Description

n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 fail to verify the x-webflow-signature HMAC in the Webflow Trigger node webhook handler. Unauthenticated attackers can send forged webhook requests with attacker-controlled payloads to trigger workflows and manipulate downstream actions like record creation or API calls.

CVSS Vector

References

• https://github.com/n8n-io/n8n/security/advisories/GHSA-hwv9-jhc7-f7c4
• https://www.vulncheck.com/advisories/n8n-before-1.123.80-2.39.6-and-2.40.1-missing-webhook-signature-verification