CVE-2013-10051 — AI Deep Analysis Summary

Q: Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **CWE-95** (Improper Neutralization of Special Elements used in an OS Command). 🔍 **Flaw**: The `eval()` function is used improperly, allowing malicious input to execute as code.

Q: Who is affected? (Versions/Components)

📦 **Affected**: **InstantCMS**. 📅 **Versions**: Version **1.6 and earlier**. 🏢 **Vendor**: instantSoft (Open Source CMS).

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

💀 **Attacker Actions**: Full **Remote Code Execution**. 🔓 **Privileges**: Can execute arbitrary PHP code on the server. 📂 **Data**: Potential full system access, data theft, or backdoor installation.

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

⚡ **Threshold**: **Low**. 🌐 **Auth**: Likely remote (no authentication required based on RCE nature). ⚙️ **Config**: Exploits the `eval` flaw directly via web requests.

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

🔥 **Public Exp**: **YES**. 📂 **Sources**: Exploit-DB (#26622), Metasploit module (`instantcms_exec.rb`), PacketStorm. 🌍 **Status**: Wild exploitation is possible.

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

🔍 **Self-Check**: Scan for **InstantCMS** instances. 🧪 **Test**: Check for versions **≤ 1.6**. 🛠️ **Tool**: Use Metasploit or specific RCE scanners targeting the `eval` vector.

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

🩹 **Fix**: Upgrade to a version **newer than 1.6**. ✅ **Official**: Patch exists in newer releases of InstantCMS. 📝 **Note**: Ensure you are not running legacy 1.6 code.

Q: What if no patch? (Workaround)

🚧 **No Patch?**: **Mitigation**. 🚫 **Block**: Restrict access to InstantCMS directories via WAF or Firewall. 🔒 **Code**: If source is available, sanitize inputs before `eval()` (though upgrading is safer).

Q: Is it urgent? (Priority Suggestion)

🚨 **Urgency**: **CRITICAL**. 🔥 **Priority**: **P0**. ⚠️ **Reason**: Active exploits exist (Metasploit/Exploit-DB). RCE allows total server takeover. Patch immediately!

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**: InstantCMS suffers from improper neutralization of special elements used in a command or code (`eval`). <br>💥 **Consequences**: Attackers can achieve **Remote Code Execution (RCE)**.…

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Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **CWE-95** (Improper Neutralization of Special Elements used in an OS Command). <br>🔍 **Flaw**: The `eval()` function is used improperly, allowing malicious input to execute as code.

Q3Who is affected? (Versions/Components)

📦 **Affected**: **InstantCMS**. <br>📅 **Versions**: Version **1.6 and earlier**. <br>🏢 **Vendor**: instantSoft (Open Source CMS).

Q4What can hackers do? (Privileges/Data)

💀 **Attacker Actions**: Full **Remote Code Execution**. <br>🔓 **Privileges**: Can execute arbitrary PHP code on the server. <br>📂 **Data**: Potential full system access, data theft, or backdoor installation.

Q5Is exploitation threshold high? (Auth/Config)

⚡ **Threshold**: **Low**. <br>🌐 **Auth**: Likely remote (no authentication required based on RCE nature). <br>⚙️ **Config**: Exploits the `eval` flaw directly via web requests.

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

🔥 **Public Exp**: **YES**. <br>📂 **Sources**: Exploit-DB (#26622), Metasploit module (`instantcms_exec.rb`), PacketStorm. <br>🌍 **Status**: Wild exploitation is possible.

Q7How to self-check? (Features/Scanning)

🔍 **Self-Check**: Scan for **InstantCMS** instances. <br>🧪 **Test**: Check for versions **≤ 1.6**. <br>🛠️ **Tool**: Use Metasploit or specific RCE scanners targeting the `eval` vector.

Q8Is it fixed officially? (Patch/Mitigation)

🩹 **Fix**: Upgrade to a version **newer than 1.6**. <br>✅ **Official**: Patch exists in newer releases of InstantCMS. <br>📝 **Note**: Ensure you are not running legacy 1.6 code.

Q9What if no patch? (Workaround)

🚧 **No Patch?**: **Mitigation**. <br>🚫 **Block**: Restrict access to InstantCMS directories via WAF or Firewall. <br>🔒 **Code**: If source is available, sanitize inputs before `eval()` (though upgrading is safer).

Q10Is it urgent? (Priority Suggestion)

🚨 **Urgency**: **CRITICAL**. <br>🔥 **Priority**: **P0**. <br>⚠️ **Reason**: Active exploits exist (Metasploit/Exploit-DB). RCE allows total server takeover. Patch immediately!

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Vulnerability detail Full AI analysis (login) InstantCMS CWE-95