GPUStack: Authentication bypass via trusted loopback source (reverse-proxy TCP peer or X-GPUStack-Real-IP header) grants unauthenticated admin
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| gpustack | gpustack | affected |
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| Gpustack | Gpustack |
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| Source | ID | Title |
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Github GHSA |
GHSA-gj9m-f8ph-pmhr | GPUStack: Authentication bypass via trusted loopback source (reverse-proxy TCP peer or X-GPUStack-Real-IP header) grants unauthenticated admin |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is in the KEV database since Nov. 9, 2026.
Exploit prediction score: < 1% (0.517% probability within 30 days)
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| CPEs | cpe:2.3:a:gpustack:gpustack:*:*:*:*:*:*:*:* |
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Gpustack
Gpustack gpustack |
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Gpustack
Gpustack gpustack |
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| Description | 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. | |
| Title | GPUStack: Authentication bypass via trusted loopback source (reverse-proxy TCP peer or X-GPUStack-Real-IP header) grants unauthenticated admin | |
| Weaknesses | CWE-287 CWE-290 CWE-346 |
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| Metrics |
cvssV3_1
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