CVE-2026-73842 — OpenChoreo is a complete, open-source developer platform for Kubernetes.¶
Key facts
CVE-2026-73842 is a Critical (9.0) vulnerability: OpenChoreo is a complete, open-source developer platform for Kubernetes.. This entry ships a detection-only PoC and a Docker test lab.
| CVE | CVE-2026-73842 |
| Severity | Critical (9.0) |
| Detection / prevention | — |
| PoC | poc.py |
| Source | 2026/CVE-2026-73842/ |
Details¶
English | 한국어
Description¶
OpenChoreo is a complete, open-source developer platform for Kubernetes. Prior to 1.0.3, 1.1.3, and 1.2.0-rc.2, internal/cluster-gateway/server.go exposed /api/proxy/, /api/exec/, and /api/wirelogs/ on an internal listener without requiring a client certificate or token, allowing any network-reachable caller to read tenant Kubernetes Secrets, mutate workloads, and execute commands across connected data planes. This issue is fixed in versions 1.0.3, 1.1.3, and 1.2.0-rc.2.
Vulnerability Details¶
| Property | Value |
|---|---|
| CVE ID | CVE-2026-73842 |
| Type | RCE |
| CVSS Score | 9.0 |
Proof of Concept¶
Download¶
# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-73842/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-2026-73842
# 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/openchoreo/openchoreo/commit/50fcae3f1753fd0ac3ae655a3fc080a761c49c04
- https://github.com/openchoreo/openchoreo/commit/93e6f10953cfc249af2222ddb6730d4b0a729129
- https://github.com/openchoreo/openchoreo/commit/e3da3c63dcf0895c693cb17ce142ef95e959b62a
- https://github.com/openchoreo/openchoreo/pull/4256
- https://github.com/openchoreo/openchoreo/pull/4258
- https://github.com/openchoreo/openchoreo/pull/4259
- https://github.com/openchoreo/openchoreo/releases/tag/v1.0.3
- https://github.com/openchoreo/openchoreo/releases/tag/v1.1.3
- https://github.com/openchoreo/openchoreo/releases/tag/v1.2.0-rc.2
- https://github.com/openchoreo/openchoreo/security/advisories/GHSA-rh53-xvx2-j327
Generated by PoC Generator on 2026-08-15T12:45:01.776625421
Frequently asked questions¶
What is CVE-2026-73842?¶
CVE-2026-73842 is a Critical (9.0) vulnerability: OpenChoreo is a complete, open-source developer platform for Kubernetes.. This entry ships a detection-only PoC and a Docker test lab.
How do I detect CVE-2026-73842?¶
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-2026-73842?¶
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.