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TI-2026-42223 Aliases CVE-2026-58658GHSA-26wv-hf3j-hjjh

GPUStack Unauthenticated Information Disclosure via Worker Endpoints

Priority HIGH 77CWE-306Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00535 45th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
gpustackgpustackup to 2.2.1—Patch availableCNA
  • gpustack Vendorgpustack Affected up to 2.2.1 Fixed in — Patch available CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-58658
  2. 2026-10-03 Alias added: GHSA-26wv-hf3j-hjjh

References

Exploit 1

Patch 1

  • TI-2026-85210 Authentication bypass in GPUStack grants unauthenticated admin access CVSS 3.1CRITICAL 9.8
  • TI-2026-85212 Unverified SAML responses in GPUStack allow authentication bypass CVSS 3.1CRITICAL 9.1
  • TI-2026-85224 Missing authorization in GPUStack cluster proxy exposes Kubernetes clusters CVSS 3.1HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences