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CVE-2026-11876

5.0 · MEDIUM

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 d…

Published Jul 21, 2026CWE-862EPSS 0.31%

Overview

CVE-2026-11876 is a medium-severity vulnerability. It was published on July 21, 2026 and has a CVSS 3.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/zenml-io/zenml/commit/9ad2c65f24ded22a5a98d289d63a7f629b434b61Refhuntr.com/bounties/3b434e02-0ee9-4b5e-a44b-0988b6f074c7Refhuntr.com/bounties/3b434e02-0ee9-4b5e-a44b-0988b6f074c7

How CyberStrike helps

Frequently asked questions

What is CVE-2026-11876?

CVE-2026-11876 is a medium-severity vulnerability. It was published on July 21, 2026 and has a CVSS 3.0 base score of 5.0 (MEDIUM).

How severe is CVE-2026-11876?

This vulnerability has a CVSS 3.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-11876?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-11876?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-11876 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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