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4 vulnerabilities by gpustack
CVE-2026-103002 (GCVE-0-2026-103002)
Vulnerability from cvelistv5 – Published: 2026-11-04 21:33 – Updated: 2026-11-06 11:34
VLAI
EPSS
VEX
Title
GPUStack: Missing authorization on several cluster and resource endpoints allows cross-user access and cluster takeover
Summary
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.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-06 04:56 UTC
Assigner
GitHub_M
CNA
References
6 references
| URL | Tags |
|---|---|
| https://github.com/gpustack/gpustack/security/adv… | x_refsource_CONFIRM |
| https://github.com/gpustack/gpustack/pull/5911 | x_refsource_MISC |
| https://github.com/gpustack/gpustack/pull/5936 | x_refsource_MISC |
| https://github.com/gpustack/gpustack/commit/36319… | x_refsource_MISC |
| https://github.com/gpustack/gpustack/commit/cdd67… | x_refsource_MISC |
| https://github.com/gpustack/gpustack/releases/tag… | x_refsource_MISC |
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CVE-2026-102894 (GCVE-0-2026-102894)
Vulnerability from cvelistv5 – Published: 2026-11-04 21:18 – Updated: 2026-11-06 11:34
VLAI
EPSS
VEX
Title
GPUStack: SAML callback trusts an unverified SAMLResponse, allowing authentication bypass and account takeover
Summary
GPUStack is an open-source GPU cluster manager for AI model serving and GPU instance provisioning. From 0.7.1 until 2.2.2, the /auth/saml/callback endpoint decoded SAML XML, used its NameID and attributes to resolve or provision a user, and minted a gpustack_session JWT without calling OneLogin_Saml2_Auth.process_response to verify the signature, issuer, audience, destination, or time conditions. Any network client could submit an identity for an existing user, including an administrator, or provision a new non-administrator account, even when SAML was not configured. Response and Assertion identifiers were not consumed, so captured signed responses could also be replayed. This issue is fixed in version 2.2.2.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-06 04:56 UTC
CWE
Assigner
GitHub_M
CNA
References
6 references
| URL | Tags |
|---|---|
| https://github.com/gpustack/gpustack/security/adv… | x_refsource_CONFIRM |
| https://github.com/gpustack/gpustack/pull/5753 | x_refsource_MISC |
| https://github.com/gpustack/gpustack/pull/5923 | x_refsource_MISC |
| https://github.com/gpustack/gpustack/commit/705ed… | x_refsource_MISC |
| https://github.com/gpustack/gpustack/commit/adc6d… | x_refsource_MISC |
| https://github.com/gpustack/gpustack/releases/tag… | x_refsource_MISC |
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CVE-2026-102895 (GCVE-0-2026-102895)
Vulnerability from cvelistv5 – Published: 2026-11-04 21:16 – Updated: 2026-11-09 20:58
VLAI
EPSS
VEX
Title
GPUStack: Authentication bypass via trusted loopback source (reverse-proxy TCP peer or X-GPUStack-Real-IP header) grants unauthenticated admin
Summary
GPUStack is an open-source GPU cluster manager for AI model serving and GPU instance provisioning. Prior to 2.2.0, get_current_user in gpustack/api/auth.py treated a loopback request source as the built-in administrator when force_auth_localhost was false, which was the default. A remote request could appear to originate from 127.0.0.1 because client_ip_getter accepted a same-host reverse proxy peer or a client-supplied X-GPUStack-Real-IP loopback value. The bypass allowed unauthenticated administrative access, including user and model changes, persistent administrator API-key creation, disclosure of worker and cloud-provider secrets, and code execution through POST /v2/inference-backends/from-yaml. Exploitation was observed in the wild against a 2.1.1 deployment. This issue is fixed in version 2.2.0.
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-09 16:50 UTC
CWE
Assigner
GitHub_M
CNA
References
5 references
| URL | Tags |
|---|---|
| https://github.com/gpustack/gpustack/security/adv… | x_refsource_CONFIRM |
| https://github.com/gpustack/gpustack/pull/5346 | x_refsource_MISC |
| https://github.com/gpustack/gpustack/commit/53f42… | x_refsource_MISC |
| https://github.com/gpustack/gpustack/releases/tag… | x_refsource_MISC |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
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CVE-2026-58658 (GCVE-0-2026-58658)
Vulnerability from cvelistv5 – Published: 2026-07-15 17:00 – Updated: 2026-11-08 14:07 X_Open Source
VLAI
EPSS
VEX
Title
GPUStack Unauthenticated Information Disclosure via Worker Endpoints
Summary
GPUStack through 2.2.1, fixed in commit 4e20551, contains an unauthenticated information disclosure vulnerability that allows unauthenticated attackers to access sensitive inference logs and modify worker configuration by exploiting unprotected /serveLogs and /debug endpoints on the worker port. Attackers can enumerate model instance IDs to stream serving logs containing prompts and completions, change log levels, and read memory profiling data without any authentication.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-15 18:12 UTC
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
VulnCheck
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/gpustack/gpustack/issues/5836 | technical-descriptionexploitissue-tracking |
| https://github.com/gpustack/gpustack/commit/4e205… | patch |
| https://www.vulncheck.com/advisories/gpustack-una… | third-party-advisory |
Impacted products
Date Public
2026-07-10 00:00
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