CVE-2026-54303
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.
Summary dbcve.org
Reflected XSS vulnerability in n8n workflow automation platform versions prior to 2.24.0. The Meta and Microsoft Teams trigger nodes reflect query parameters into HTTP responses without sanitization or Content-Security-Policy headers, allowing attackers to inject malicious scripts via crafted URLs targeting logged-in users.
Mitigation
Upgrade n8n to version 2.24.0 or later, which implements proper input sanitization and adds Content-Security-Policy headers to prevent reflected XSS.