CVE-2026-102895: gpustack · Improper Authentication
Affects gpustackSource CVE Database V5
Not known to be exploited · CVSS 9.8 Critical : upgrade to 2.2.0 as a priority.
Data as of 4 Nov 2026, 21:22 UTC
Thin evidence
One scorer or none| CNA (GitHub_M) | CVSS 3.1 | 9.8 |
|---|
- Patch
- Available – fixed in 2.2.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 4 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 4 Nov 2026.
What to do
Upgrade gpustack to 2.2.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| gpustackgpustack | Affected
| Fixed in
|
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.
References
- github.com/gpustack/gpustack/security/advisories/GHSA-gj9m-f8ph-pmhr (opens in a new tab)
- github.com/gpustack/gpustack/pull/5346 (opens in a new tab)
- github.com/gpustack/gpustack/commit/53f42a6a553542974396d16a4ff6b12bcbedb48d (opens in a new tab)
- github.com/gpustack/gpustack/releases/tag/v2.2.0 (opens in a new tab)