CVE-2026-103002 is a high-severity (CVSS 8.8) CWE-639 vulnerability in gpustack. A fix is available for gpustack — see the affected versions and patch details below.
GPUStack: Missing authorization on several cluster and resource endpoints allows cross-user access and cluster takeover
Exploitation Status
No confirmed exploitation observed yet
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2026-103002.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
gpustackReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
Impact
An authenticated non-administrative user could access a Kubernetes cluster they are not authorized to access through GPUStack's Kubernetes API proxy.
The cluster_apiserver_proxy handler did not perform a resource-level authorization check before forwarding requests to the selected cluster. Requests were forwarded through a worker using its Kubernetes ServiceAccount credentials.
Depending on the permissions granted to that ServiceAccount, an attacker could read sensitive Kubernetes resources, create or modify workloads, or delete resources and disrupt services. Creating attacker-controlled workloads could result in code execution in the target cluster.
Exploitation requires a Kubernetes-provider cluster with a reachable worker. The operations available to the attacker are limited by the worker's ServiceAccount permissions.
Patches
Fixed in gpustack v2.2.2.
Workarounds
Restrict access to the GPUStack instance to trusted administrator accounts until upgrading.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | gpustack | ≥ 2.2.0&&< 2.2.2 | 2.2.2pip install --upgrade 'gpustack==2.2.2' |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for gpustack, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update gpustack to 2.2.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-103002 is resolved across your whole dependency graph.
Workarounds
Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
This vulnerability is rated as Important rather than Critical because exploitation requires valid user authentication and a reachable worker node, though successful attacks permit complete cluster workload manipulation and code execution. GPUStack is not included or supported in Red Hat Enterprise Linux or Red Hat…
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. --- CME Mitigation Guidance (2026-11-06) --- Disclaimer: The following mitigation solutions are provided as a courtesy, pending the application of an official patch. This content was generated utilizing AI tools in conjunction with data from https://cmetaxonomy.org. Customers are advised to independently evaluate and test these temporary mitigations within their own infrastructure. The highest-value action is to enforce tenant scoping and resource-level…Source: Red Hat security advisory for CVE-2026-103002 (CC BY 4.0)
Frequently Asked Questions
Is CVE-2026-103002 in your dependencies?
Find it across PyPI, including transitive dependencies.