CVE-2026-11876

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.

CVSS v3 5.0 MEDIUM

5.0^/10

CVSS v3 : MEDIUM

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

Exploitability : 3.1 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/zenml-io/zenml/commit/9ad2c65f24ded22a5a98d289d63a7f629b434b61
https://huntr.com/bounties/3b434e02-0ee9-4b5e-a44b-0988b6f074c7
https://huntr.com/bounties/3b434e02-0ee9-4b5e-a44b-0988b6f074c7

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-21 15:16

Updated : 2026-07-23 18:24

NVD link : CVE-2026-11876

Mitre link : CVE-2026-11876

CVE.ORG link : CVE-2026-11876

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

{"id": "CVE-2026-11876", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-11876", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-22T18:03:21.298320Z"}}], "cvssMetricV30": [{"type": "Secondary", "source": "security@huntr.dev", "cvssData": {"scope": "CHANGED", "version": "3.0", "baseScore": 5.0, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.1}]}, "affected": [{"source": "security@huntr.dev", "affectedData": [{"vendor": "zenml-io", "product": "zenml-io/zenml", "versions": [{"status": "affected", "version": "unspecified", "lessThan": "0.95.0", "versionType": "custom"}]}]}], "published": "2026-07-21T15:16:30.480", "references": [{"url": "https://github.com/zenml-io/zenml/commit/9ad2c65f24ded22a5a98d289d63a7f629b434b61", "source": "security@huntr.dev"}, {"url": "https://huntr.com/bounties/3b434e02-0ee9-4b5e-a44b-0988b6f074c7", "source": "security@huntr.dev"}, {"url": "https://huntr.com/bounties/3b434e02-0ee9-4b5e-a44b-0988b6f074c7", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security@huntr.dev", "description": [{"lang": "en", "value": "CWE-862"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-07-23T18:24:39.053", "sourceIdentifier": "security@huntr.dev"}