CVE-2026-58658 — GPUStack through 2.2.1, fixed in commit 4e20551, contains an unauthenticated information…¶
Key facts
CVE-2026-58658 is a High (8.2) vulnerability: GPUStack through 2.2.1, fixed in commit 4e20551, contains an unauthenticated information…. This entry ships a detection-only PoC and a Docker test lab.
| CVE | CVE-2026-58658 |
| Severity | High (8.2) |
| Detection / prevention | — |
| PoC | poc.py |
| Source | 2026/CVE-2026-58658/ |
Details¶
English | 한국어
Description¶
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.
Vulnerability Details¶
| Property | Value |
|---|---|
| CVE ID | CVE-2026-58658 |
| CVSS Score | 8.2 |
Proof of Concept¶
Download¶
# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-58658/poc.py
Usage¶
# Run PoC against target
python3 poc.py --target <TARGET_URL>
# With authentication
python3 poc.py --target <TARGET_URL> --username <USER> --password <PASS>
⚠️ Warning: This PoC is for authorized security testing only. It uses detection-only techniques and does not exploit or damage target systems.
Test Lab¶
This repository includes a Docker-based test environment with both vulnerable and patched applications.
Quick Start¶
# Clone and navigate to CVE directory
cd CVE-2026-58658
# Start both applications
docker-compose up -d
# Run tests
./run-tests.sh # Linux/Mac
./run-tests.ps1 # Windows PowerShell
Application Endpoints¶
| Application | URL | Status |
|---|---|---|
| Vulnerable App | http://localhost:8080 | Shows vulnerability |
| Patched App | http://localhost:8081 | Demonstrates fix |
Directory Structure¶
├── README.md # English documentation
├── README_KO.md # Korean documentation
├── poc.py # PoC detection script
├── docker-compose.yml # Container orchestration
├── run-tests.sh # Linux/Mac test runner
├── run-tests.ps1 # Windows test runner
├── vulnerable-app/ # Vulnerable version
│ ├── app.py
│ ├── Dockerfile
│ └── requirements.txt
└── patched-app/ # Fixed version
├── app.py
├── Dockerfile
└── requirements.txt
References¶
- https://github.com/gpustack/gpustack/commit/4e20551b5aaf76f93a8769d32b7fef999e22a4d3
- https://github.com/gpustack/gpustack/issues/5836
- https://github.com/gpustack/gpustack/issues/5836
- https://github.com/gpustack/gpustack/issues/5836
- https://github.com/gpustack/gpustack/issues/5836
- https://www.vulncheck.com/advisories/gpustack-unauthenticated-information-disclosure-via-worker-endpoints
- https://github.com/gpustack/gpustack/issues/5836
Generated by PoC Generator on 2026-07-16T05:45:45.969117361
Frequently asked questions¶
What is CVE-2026-58658?¶
CVE-2026-58658 is a High (8.2) vulnerability: GPUStack through 2.2.1, fixed in commit 4e20551, contains an unauthenticated information…. This entry ships a detection-only PoC and a Docker test lab.
How do I detect CVE-2026-58658?¶
Run the detection-only PoC included with this entry against your Docker test lab to confirm whether a target is affected; pair it with your own IDS logging.
How do I block or mitigate CVE-2026-58658?¶
Upgrade to a fixed version per the vendor advisory; the NVD record lists the affected versions. Use the included PoC to verify your remediation.
For authorized security testing and research only. See the full source and NVD record.