zenml-io zenml up to 0.94.x RBAC stack get_deployed_stack improper authorization

Summaryinfo

A vulnerability marked as problematic has been reported in zenml-io zenml up to 0.94.x. This issue affects the function get_deployed_stack of the file /api/v1/stack-deployment/stack of the component RBAC. This manipulation causes improper authorization. This vulnerability appears as CVE-2026-11876. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in zenml-io zenml up to 0.94.x. It has been declared as problematic. Affected by this vulnerability is the function get_deployed_stack of the file /api/v1/stack-deployment/stack of the component RBAC. The manipulation with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality. The summary by CVE is:

In zenml-io/zenml version 0.94.2, the `GET /api/v1/stack-deployment/stack` endpoint (`get_deployed_stack`) lacks proper RBAC authorization checks, allowing any authenticated user to enumerate all deployed stacks across all users and tenants. This includes stack component details, service connector information, and user IDs of stack owners. The vulnerability arises from two issues: 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 exposes sensitive information such as infrastructure topology, service connector details, stack ownership, and deployment metadata, potentially enabling cross-tenant reconnaissance and further attacks in multi-tenant ZenML Pro/Cloud deployments.

It is possible to read the advisory at huntr.com. This vulnerability is known as CVE-2026-11876 since 06/10/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

Upgrading to version 0.95.0 eliminates this vulnerability.

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Productinfo

Vendor

• zenml-io

Name

• zenml

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
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• 0.9
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• 0.11
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• 0.66
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• 0.80
• 0.81
• 0.82
• 0.83
• 0.84
• 0.85
• 0.86
• 0.87
• 0.88
• 0.89
• 0.90
• 0.91
• 0.92
• 0.93
• 0.94

CPE 2.3info

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