# CVE-2026-103002: GPUStack: Missing authorization on several cluster and resource endpoints allows cross-user access and cluster takeover

Status: published. Published: 2026-11-04. Updated: 2026-11-04.

GPUStack is an open-source GPU cluster manager for AI model serving and GPU instance provisioning. From 2.2.0 until 2.2.2, cluster_apiserver_proxy forwarded an authenticated non-administrator's requests to a selected Kubernetes cluster without a resource-level authorization check. The proxy used a reachable worker's Kubernetes ServiceAccount credentials, so the caller could read sensitive resources, create or modify workloads, or delete resources according to that ServiceAccount's permissions. Exploitation required a Kubernetes-provider cluster with a reachable worker, and attacker-controlled workloads could result in code execution in the target cluster. This issue is fixed in version 2.2.2.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- gpustack / gpustack: >= 2.2.0, < 2.2.2 (affected). Source: CNA: GitHub_M

## Severity and prioritization

- CVSS 3.1: 8.8 (high); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H; source: CNA: GitHub_M

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-639, CWE-862

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/gpustack/gpustack/security/advisories/GHSA-3hch-x692-6qj3 (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/gpustack/gpustack/pull/5911 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/gpustack/gpustack/pull/5936 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/gpustack/gpustack/commit/363191fa1da7e1426c6041f78b3cf00aff2622fe (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/gpustack/gpustack/commit/cdd67467e0f314609dc82216e142940d321abfed (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/gpustack/gpustack/releases/tag/v2.2.2 (CNA: GitHub_M; x_refsource_MISC)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-103002; retrieved 2026-11-04; source updated 2026-11-04

Revision: 40a7264c62179c1b45cec31f2f6e2e4fddeeea6654a7c06b28bb31db35dc1907

Canonical: https://y2.dev/cve/CVE-2026-103002

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