underh0st/cpanel-audit-remediation-toolAudit and incident response tool for CVE-2026-41940 vulnerability
Professional Security Auditing & Incident Response Suite for cPanel Infrastructure.
This tool was developed by Oscar Constanzo Quezada, AKA Underhost to identify and remediate the CVE-2026-41940 vulnerability in cPanel servers. The flaw allows an Authentication Bypass via HTTP session header injection, enabling an attacker to gain full administrative (root) privileges without a valid password.
⚠️ Legal Disclaimer THIS TOOL IS PROVIDED FOR EDUCATIONAL AND ETHICAL AUDITING PURPOSES ONLY.[cite: 1] The author is not responsible for any misuse, damage, or unauthorized access. Use this software on networks only with explicit permission.
# Clone the repository
git clone https://github.com/Underh0st/CPanel-Audit-Remediation-Tool.git
# Enter the directory
cd CPanel-Audit-Remediation-Tool
# Install dependencies
pip3 install -r requirements.txt
# Run the script
python3 ART.py
📋 Remediation Protocol The tool guides the administrator through a professional incident response protocol.
1.Isolation: Restrict access to management ports (2082-2087) via firewall.
2.Patching: Force core update using /scripts/upcp --force.
3.Sanitization: Physical purge of /var/cpanel/sessions/raw/ to invalidate stolen tokens.
4.Threat Hunting: Locate persistence (backdoors) using find /home -mtime -1 -ls.
5.Hardening: Enable cPHulk and Multi-Factor Authentication (MFA).
Figure 2: Active scanning module successfully identifying CVE-2026-41940 and generating a risk assessment.
Figure 3: Professional 5-phase Incident Response Manual detailing system sanitization and hardening.
Author Oscar Constanzo Quezada. (Underhost) - OFFENSIVE HACKER SINCE 2010