CVE-2022-4067 — AI Deep Analysis Summary

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

🚨 **Essence**: Stored XSS in LibreNMS. 📉 **Consequences**: Malicious scripts persist in the system. Victims execute code upon viewing affected pages. Data theft & session hijacking risks. 🛑

Q: Root Cause? (CWE/Flaw)

🛡️ **CWE-79**: Improper Neutralization of Input During Web Page Generation. 🔍 **Flaw**: Lack of output encoding/sanitization. User input rendered as HTML/JS without checks. 💥

Q: Who is affected? (Versions/Components)

📦 **Vendor**: LibreNMS. 📉 **Affected**: Versions **before 22.10.0**. 🌐 **Tech**: PHP & MySQL based open-source network monitor. ⚠️

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

💻 **Actions**: Execute arbitrary JavaScript in victim's browser. 🔑 **Privileges**: Steal cookies/sessions. Redirect users. Phishing. 📂 **Data**: Access sensitive network monitoring data. 🕵️♂️

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

⚖️ **Threshold**: Medium. 🔐 **Auth**: Likely requires authenticated access to inject payload. 📝 **Type**: Stored XSS means payload waits for victim. No complex config needed. 🎯

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

📜 **Public Exp**: No specific PoC provided in data. 🌍 **Wild Exp**: Low immediate wild exploitation risk noted. 🔗 **Refs**: GitHub commit & Huntr bounty exist. Proof of concept likely exists internally. 🕵️♀️

Q: How to self-check? (Features/Scanning)

🔍 **Check**: Scan for LibreNMS instances. 📅 **Version**: Verify version < 22.10.0. 🧪 **Test**: Input test XSS payloads in user-editable fields. Check if script executes. 🧪

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

✅ **Fixed**: Yes. 🔧 **Patch**: Update to LibreNMS **22.10.0** or later. 🔗 **Commit**: 8e85698aa3aa4884c2f3d6c987542477eb64f07c. 🛡️

Q: What if no patch? (Workaround)

🚧 **Workaround**: If unpatched, restrict input fields. 🛡️ **WAF**: Deploy Web Application Firewall rules. 👀 **Monitor**: Alert on XSS patterns in logs. Limit admin access. 🛑

Q: Is it urgent? (Priority Suggestion)

🔥 **Priority**: High. ⏰ **Urgency**: Critical for unpatched systems. 📢 **Action**: Patch immediately. Stored XSS is dangerous. Don't wait. 🚀

Updated May 08, 2026

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**: Stored XSS in LibreNMS. <br>📉 **Consequences**: Malicious scripts persist in the system. Victims execute code upon viewing affected pages. Data theft & session hijacking risks. 🛑

Q2Root Cause? (CWE/Flaw)

🛡️ **CWE-79**: Improper Neutralization of Input During Web Page Generation. <br>🔍 **Flaw**: Lack of output encoding/sanitization. User input rendered as HTML/JS without checks. 💥

Q3Who is affected? (Versions/Components)

📦 **Vendor**: LibreNMS. <br>📉 **Affected**: Versions **before 22.10.0**. <br>🌐 **Tech**: PHP & MySQL based open-source network monitor. ⚠️

Q4What can hackers do? (Privileges/Data)

💻 **Actions**: Execute arbitrary JavaScript in victim's browser. <br>🔑 **Privileges**: Steal cookies/sessions. Redirect users. Phishing. <br>📂 **Data**: Access sensitive network monitoring data. 🕵️‍♂️

Q5Is exploitation threshold high? (Auth/Config)

⚖️ **Threshold**: Medium. <br>🔐 **Auth**: Likely requires authenticated access to inject payload. <br>📝 **Type**: Stored XSS means payload waits for victim. No complex config needed. 🎯

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

📜 **Public Exp**: No specific PoC provided in data. <br>🌍 **Wild Exp**: Low immediate wild exploitation risk noted. <br>🔗 **Refs**: GitHub commit & Huntr bounty exist. Proof of concept likely exists internally. 🕵️‍♀️

Q7How to self-check? (Features/Scanning)

🔍 **Check**: Scan for LibreNMS instances. <br>📅 **Version**: Verify version < 22.10.0. <br>🧪 **Test**: Input test XSS payloads in user-editable fields. Check if script executes. 🧪

Q8Is it fixed officially? (Patch/Mitigation)

✅ **Fixed**: Yes. <br>🔧 **Patch**: Update to LibreNMS **22.10.0** or later. <br>🔗 **Commit**: 8e85698aa3aa4884c2f3d6c987542477eb64f07c. 🛡️

Q9What if no patch? (Workaround)

🚧 **Workaround**: If unpatched, restrict input fields. <br>🛡️ **WAF**: Deploy Web Application Firewall rules. <br>👀 **Monitor**: Alert on XSS patterns in logs. Limit admin access. 🛑

Q10Is it urgent? (Priority Suggestion)

🔥 **Priority**: High. <br>⏰ **Urgency**: Critical for unpatched systems. <br>📢 **Action**: Patch immediately. Stored XSS is dangerous. Don't wait. 🚀

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Vulnerability detail Full AI analysis (login) librenms CWE-79