Vulnerability in n8n-io n8n

[ Description ]Official description

n8n before 1.123.83, 2.41.4, and 2.42.1 contains a stored cross-site scripting vulnerability in the file-preview modal, which re-publishes binary data as an unsandboxed same-origin blob URL. A member who uploads a crafted item can run script in the n8n origin of whoever previews it, typically the owner, and act with their session.

[ 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-Bund29 Sep 2026WID-SEC-2026-3672

  n8n: Multiple vulnerabilities Translated from German

  CVE-2026-110843CVE-2026-110849CVE-2026-110842+10 more CVEs

[ References ]References

• github.com/n8n-io/n8n/security/advisories/GHSA-29xw-66fq-4xc3
• www.vulncheck.com/advisories/n8n-before-1.123.83-2.41.4-and-2.42.1-stored-xss-via-binar…