CVE-2026-103245 — n8n before 1.123.80, 2.39.6, and 2.40.1 Missing Webhook Signature Verification
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. Un…
Published: 2026-10-01 · CVSS: 6.9 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7