Vulnerability in n8n-io n8n

[ Description ]Official description

n8n before 2.43.5 and 2.44.x before 2.44.1 accepts a client-supplied workflow ID and caches each workflow's owner project in memory by that ID, so a crafted ID such as __proto__ makes the Data Table project check match every project. An authenticated member who can create and run workflows can list, read, modify, and delete Data Table rows in all projects of the instance.

[ 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-wvjj-qg37-pv73
• www.vulncheck.com/advisories/n8n-before-2.43.5-and-2.44.1-authorization-bypass-via-craf…