CVE-2026-41940 — AI Deep Analysis Summary

Q: What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: Critical Auth Bypass in cPanel login flow. 💥 **Consequences**: Unauthenticated remote attackers gain full unauthorized access to the control panel. Total compromise of server management.

Q: Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: CWE-306 (Missing Authentication for Critical Function). 🔍 **Flaw**: The login process fails to verify identity properly, allowing bypass mechanisms.

Q: Who is affected? (Versions/Components)

📦 **Affected**: cPanel & WHM by WebPros. 📉 **Versions**: • 11.110.0.97 & below • 11.118.0.63 & below • 11.126.0.54 & below • 11.132.0.29 & below • 11.134.0.20 & below • 11.136.0.54 & below

Q: What can hackers do? (Privileges/Data)

👑 **Privileges**: Full administrative access to the control panel. 📂 **Data**: Complete read/write access to hosted websites, server configs, and user data. No credentials needed.

Q: Is exploitation threshold high? (Auth/Config)

⚡ **Threshold**: LOW. 🔓 **Auth**: None required (PR:N). 🌐 **Network**: Remote (AV:N). 🖱️ **UI**: None required (UI:N). Easy to exploit.

Q: Is there a public Exp? (PoC/Wild Exploitation)

💻 **Exploit**: Yes. 📜 **PoC**: Available via Nuclei templates (ProjectDiscovery). 🔥 **Status**: High risk of wild exploitation due to simplicity.

Q: Is it fixed officially? (Patch/Mitigation)

✅ **Fixed**: Yes. 🔧 **Patch**: Update to versions: • 11.110.0.97+ • 11.118.0.63+ • 11.126.0.54+ • 11.132.0.29+ • 11.134.0.20+ • 11.136.0.55+ (implied next patch)

Q: What if no patch? (Workaround)

🚧 **Workaround**: If patching is delayed, restrict access to port 2083/2087 via firewall (IP whitelisting). 👀 **Monitor**: Enable strict logging and alert on unusual login attempts or admin panel access.

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: CRITICAL (CVSS 9.8). ⏳ **Priority**: IMMEDIATE ACTION REQUIRED. 🚀 **Action**: Patch immediately to prevent total server takeover.

Updated May 06, 2026 CVSS 9.8 · Critical

This is a summary of the AI-generated 10-question deep analysis. The full version (longer answers, follow-up Q&A, related CVEs) requires login. Read the full analysis →

Q1What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: Critical Auth Bypass in cPanel login flow. <br>💥 **Consequences**: Unauthenticated remote attackers gain full unauthorized access to the control panel. Total compromise of server management.

Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: CWE-306 (Missing Authentication for Critical Function). <br>🔍 **Flaw**: The login process fails to verify identity properly, allowing bypass mechanisms.

Q3Who is affected? (Versions/Components)

📦 **Affected**: cPanel & WHM by WebPros. <br>📉 **Versions**: <br>• 11.110.0.97 & below <br>• 11.118.0.63 & below <br>• 11.126.0.54 & below <br>• 11.132.0.29 & below <br>• 11.134.0.20 & below <br>• 11.136.0.54 & below

Q4What can hackers do? (Privileges/Data)

👑 **Privileges**: Full administrative access to the control panel. <br>📂 **Data**: Complete read/write access to hosted websites, server configs, and user data. No credentials needed.

Q5Is exploitation threshold high? (Auth/Config)

⚡ **Threshold**: LOW. <br>🔓 **Auth**: None required (PR:N). <br>🌐 **Network**: Remote (AV:N). <br>🖱️ **UI**: None required (UI:N). Easy to exploit.

Q6Is there a public Exp? (PoC/Wild Exploitation)

💻 **Exploit**: Yes. <br>📜 **PoC**: Available via Nuclei templates (ProjectDiscovery). <br>🔥 **Status**: High risk of wild exploitation due to simplicity.

Q7How to self-check? (Features/Scanning)

🔍 **Check**: Scan for cPanel versions using Nuclei or similar scanners. <br>📋 **Feature**: Check if login flow bypasses standard credential checks.…

Read full answer (login)

Q8Is it fixed officially? (Patch/Mitigation)

✅ **Fixed**: Yes. <br>🔧 **Patch**: Update to versions: <br>• 11.110.0.97+ <br>• 11.118.0.63+ <br>• 11.126.0.54+ <br>• 11.132.0.29+ <br>• 11.134.0.20+ <br>• 11.136.0.55+ (implied next patch)

Q9What if no patch? (Workaround)

🚧 **Workaround**: If patching is delayed, restrict access to port 2083/2087 via firewall (IP whitelisting). <br>👀 **Monitor**: Enable strict logging and alert on unusual login attempts or admin panel access.

Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: CRITICAL (CVSS 9.8). <br>⏳ **Priority**: IMMEDIATE ACTION REQUIRED. <br>🚀 **Action**: Patch immediately to prevent total server takeover.

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Vulnerability detail Full AI analysis (login) WebPros CWE-306