GPUStack up to 2.2.1 cluster_apiserver_proxy privileges management

Summaryinfo

A vulnerability marked as very critical has been reported in GPUStack up to 2.2.1. This impacts an unknown function of the component cluster_apiserver_proxy. Performing a manipulation results in privileges management. This vulnerability was named CVE-2026-103002. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as very critical has been found in GPUStack up to 2.2.1. This affects an unknown code of the component cluster_apiserver_proxy. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-103002 since 09/29/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/04/2026). MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading to version 2.2.2 eliminates this vulnerability.

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Productinfo

Name

• GPUStack

Version

• 2.2.0
• 2.2.1

Website

• Product: https://github.com/gpustack/gpustack/

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