Vulnerability in n8n-io n8n

[ Description ]Official description

n8n before 1.123.83, 2.x before 2.41.4, and 2.42.x before 2.42.1 contains an authentication bypass because dynamic-path webhook resolution matched requests on the path alone, ignoring the server-generated identifier that is the URL's only unguessable component. Unauthenticated attackers can omit this identifier in requests to webhook, form, or MCP routes to execute workflows in unrelated projects under those projects' credentials.

[ 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-4c7j-qff5-r9cx
• www.vulncheck.com/advisories/n8n-before-1.123.83-2.41.4-and-2.42.1-unauthenticated-work…