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CVE PROGRAM SOURCE RECORD6.9 Medium

CVE-2026-103245

n8n before 1.123.80, 2.39.6, and 2.40.1 Missing Webhook Signature Verification

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.

Affected products

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

n8n-io n8n

Default version status: unaffected

  • 0 to < 1.123.80affected
  • 2.0.0 to < 2.39.6affected
  • 2.40.0 to < 2.40.1affected
pkg:npm/n8n

References