Vulnerability in n8n-io n8n

[ Description ]Official description

n8n before 1.123.85, 2.x before 2.43.5, and 2.44.x before 2.44.1 contains a stored cross-site scripting vulnerability because some webhook response paths, such as error responses and responses without headers, omit the sandbox Content-Security-Policy. Authenticated members who can create and activate workflows can serve HTML that runs on the n8n origin, letting scripts act with the session of users who open the webhook URL.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund13 Oct 2026WID-SEC-2026-3898

  n8n: Multiple vulnerabilities Translated from German

  CVE-2026-118641CVE-2026-118647CVE-2026-118648+11 more CVEs

[ References ]References

• github.com/n8n-io/n8n/security/advisories/GHSA-mp7q-23hg-35cf
• www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-stored-xss-via-webho…