CVE-2026-6267 — GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.1.0 before…¶
Key facts
CVE-2026-6267 is a High (8.5) vulnerability: GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.1.0 before…. This entry ships a detection-only PoC and a Docker test lab.
| CVE | CVE-2026-6267 |
| Severity | High (8.5) |
| Detection / prevention | — |
| PoC | poc.py |
| Source | 2026/CVE-2026-6267/ |
Details¶
English | 한국어
Description¶
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.1.0 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an authenticated user with Developer role to access unauthorized information due to insufficient access controls on internal request handling.
Vulnerability Details¶
| Property | Value |
|---|---|
| CVE ID | CVE-2026-6267 |
| CVSS Score | 8.5 |
Proof of Concept¶
Download¶
# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-6267/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-2026-6267
# 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://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-1-released/
- https://gitlab.com/gitlab-org/gitlab/-/work_items/596606
- https://hackerone.com/reports/3658324
Generated by PoC Generator on 2026-08-02T17:22:27.487060775
Frequently asked questions¶
What is CVE-2026-6267?¶
CVE-2026-6267 is a High (8.5) vulnerability: GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.1.0 before…. This entry ships a detection-only PoC and a Docker test lab.
How do I detect CVE-2026-6267?¶
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-2026-6267?¶
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.