CVE-2026-110844

n8n before 1.123.83 contains an authorization bypass vulnerability that allows shared-workflow editors to use credentials they cannot access by embedding them in nested or tool inline sub-workflows. Attackers can save workflows with Workflow Tool or Workflow Retriever inline definitions referencing restricted credentials, which execute using the workflow owner's credential values.

• https://github.com/n8n-io/n8n/security/advisories/GHSA-r6g9-5cpp-ppwr
• https://www.vulncheck.com/advisories/n8n-before-1.123.83-credential-authorization-bypass-via-nested-inline-sub-workflows