CVE-2026-69703 — Atlas-Livre contains an improper access control vulnerability in the admin controllers…¶

Key facts

CVE-2026-69703 is a Critical (9.8) vulnerability: Atlas-Livre contains an improper access control vulnerability in the admin controllers…. This entry ships a detection-only PoC and a Docker test lab.


CVE	CVE-2026-69703
Severity	Critical (9.8)
Detection / prevention	—
PoC	poc.py
Source	2026/CVE-2026-69703/

Details¶

English | 한국어

Description¶

Atlas-Livre contains an improper access control vulnerability in the admin controllers under Espace_admin/controleur/ that allows unauthenticated attackers to bypass session-based authentication guards by sending raw HTTP requests that ignore redirects. Attackers can invoke destructive admin actions such as record deletion by requesting controller endpoints with GET parameters like supp, because the PHP header() redirect is never followed by an exit or die call, allowing all subsequent code including database operations to execute regardless of session state.

Vulnerability Details¶

Property	Value
CVE ID	CVE-2026-69703
CVSS Score	9.8

Proof of Concept¶

Download¶

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-69703/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-2026-69703

# 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://gist.github.com/arjunjaincs/8cd878b6628d587a1139febd40de9ac6
https://github.com/maximeAmini/Atals-Livre
https://www.vulncheck.com/advisories/atlas-livre-unauthenticated-access-via-admin-controllers-missing-exit
https://gist.github.com/arjunjaincs/8cd878b6628d587a1139febd40de9ac6

Generated by PoC Generator on 2026-08-10T10:25:35.954463747

Frequently asked questions¶

What is CVE-2026-69703?¶

CVE-2026-69703 is a Critical (9.8) vulnerability: Atlas-Livre contains an improper access control vulnerability in the admin controllers…. This entry ships a detection-only PoC and a Docker test lab.

How do I detect CVE-2026-69703?¶

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-2026-69703?¶

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.