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OpenAdvisories
Medium · 6.8 CVE-2026-54303 EUVD-2026-38460GHSA-h86q-fx34-gfjr

n8n: Reflected XSS via Facebook, WhatsApp, and Microsoft Teams Trigger Webhook Verification Endpoints

Published Jun 23, 2026 · Updated Jun 24, 2026 · Assigned by GitHub_M

Description

n8n is an open source workflow automation platform. Prior to 2.24.0, an endpoint in the Meta and Microsoft Teams trigger nodes reflects a query parameter into the HTTP response without sanitization or Content-Security-Policy headers, enabling reflected XSS in the n8n origin when a logged-in user visits a crafted URL. This vulnerability is fixed in 2.24.0.

Affected products

VendorProductAffectedFixed
n8n-io n8n < 2.24.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm n8n < 2.24.0 2.24.0 GHSA-h86q-fx34-gfjr

Advisories 2

References