Vulnerability in n8n-io n8n

[ Description ]Official description

n8n before 1.123.83 contains an authorization bypass vulnerability that allows authenticated members to spoof workflow identity by supplying a trusted identifier in Execute Sub-workflow inline JSON mode. Attackers can set this identifier to resolve credentials from projects they do not belong to and modify another workflow's static data and error-workflow dispatch.

[ 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-866p-xg8v-g2q7
• www.vulncheck.com/advisories/n8n-before-1.123.83-authorization-bypass-via-execute-sub-w…