Missing Authorization in get_deployed_stack Endpoint in zenml-io/zenml

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-11876
StatePUBLISHED
Assigner@huntr_ai
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-21 15:16:30 UTC
Updated2026-07-22 19:16:54 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.0 5 MEDIUM from [email protected]

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

EPSS: 0.001830000 probability, percentile 0.081900000 (date 2026-07-22)

Problem Types: CWE-862 | CWE-862 CWE-862 Missing Authorization

VersionSourceTypeScoreSeverityVector
3.0[email protected]Secondary5MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
3.0CNADECLARED5MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Zenml-io Zenml-io/zenml affected unspecified 0.95.0 custom Not specified

References

ReferenceSourceLinkTags
huntr.com/bounties/3b434e02-0ee9-4b5e-a44b-0988b6f074c7 134c704f-9b21-4f2e-91b3-4a467353bcc0 huntr.com
github.com/zenml-io/zenml/commit/9ad2c65f24ded22a5a98d289d63a7f629b434b61 [email protected] github.com
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