CVE-2026-54303 — n8n: Reflected XSS via Facebook, WhatsApp, and Microsoft Teams Trigger Webhook Verification Endpoints

CVE-2026-54303

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

Description (CNA)

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 (CNA)

Vendor / product	Versions
n8n-io / n8n	affected < 2.24.0

CWE

CWE-79

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-h86q-fx34-gfjr

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.