CVE-2026-11876

Name of the Vulnerable Software and Affected Versions zenml-io/zenml version 0.94.2

Description The GET /api/v1/stack-deployment/stack endpoint (get deployed stack) lacks proper Role-Based Access Control (RBAC) authorization checks. This allows any authenticated user to enumerate all deployed stacks across all users and tenants, exposing sensitive data such as stack component details, service connector information, and user IDs of stack owners. The issue is caused by missing endpoint-level RBAC checks and the use of a server-side Client() that bypasses the RBAC enforcement layer by directly accessing the database through SqlZenStore. This exposure of infrastructure topology and deployment metadata could enable cross-tenant reconnaissance in multi-tenant ZenML Pro/Cloud deployments.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.