CVE-2026-22709 — AI Deep Analysis Summary

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

🚨 **Essence**: A critical sandbox escape in **vm2** (Node.js VM). 💥 **Consequences**: Attackers bypass Promise callback cleanup, escaping the sandbox to execute **arbitrary code**. Total loss of isolation.

Q: Root Cause? (CWE/Flaw)

🛡️ **CWE**: **CWE-94** (Code Injection). 🔍 **Flaw**: Improper handling of **Promise callback cleanup**. The whitelist mechanism fails to contain the execution context when promises resolve.

Q: Who is affected? (Versions/Components)

📦 **Vendor**: Patrik Simek. 📉 **Affected**: **vm2 < v3.10.2**. 🌐 **Product**: Node.js advanced virtual machine/sandbox library.

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

👑 **Privileges**: Full **Host System** access. 📂 **Data**: Read/Write/Execute arbitrary files, steal secrets, or pivot to internal networks. **C:H/I:H/A:H** (Critical impact).

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

🔓 **Threshold**: **LOW**. 🚫 **Auth**: None required (PR:N). 🌍 **Vector**: Network (AV:N). 👤 **UI**: None required (UI:N). Easy to exploit remotely.

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

🧪 **Exploit**: **No public PoC** listed in data. ⚠️ **Risk**: Despite no public code, CVSS score is **9.8** (Critical). Assume high risk of wild exploitation due to low barrier.

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

🔍 **Check**: Scan for **vm2** dependency in `package.json`. 📊 **Version**: Verify if version is **< 3.10.2**. 🛠️ **Tool**: Use npm audit or SAST tools detecting CWE-94 in sandbox contexts.

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

✅ **Fixed**: **Yes**. 🔧 **Patch**: Upgrade to **vm2 v3.10.2** or later. 🔗 **Ref**: [GitHub Release](https://github.com/patriksimek/vm2/releases/tag/v3.10.2).

Q: What if no patch? (Workaround)

🚧 **Workaround**: If patching is impossible, **do not use vm2** for untrusted code. 🔄 **Alternative**: Use native Node.js `vm` module with strict context isolation or containerization (Docker) for isolation.

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **CRITICAL**. ⏱️ **Priority**: **P0**. 🚀 **Action**: Patch immediately. CVSS 9.8 + Network Access + No Auth = Immediate remediation required.

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**: A critical sandbox escape in **vm2** (Node.js VM). <br>💥 **Consequences**: Attackers bypass Promise callback cleanup, escaping the sandbox to execute **arbitrary code**. Total loss of isolation.

Q2Root Cause? (CWE/Flaw)

🛡️ **CWE**: **CWE-94** (Code Injection). <br>🔍 **Flaw**: Improper handling of **Promise callback cleanup**. The whitelist mechanism fails to contain the execution context when promises resolve.

Q3Who is affected? (Versions/Components)

📦 **Vendor**: Patrik Simek. <br>📉 **Affected**: **vm2 < v3.10.2**. <br>🌐 **Product**: Node.js advanced virtual machine/sandbox library.

Q4What can hackers do? (Privileges/Data)

👑 **Privileges**: Full **Host System** access. <br>📂 **Data**: Read/Write/Execute arbitrary files, steal secrets, or pivot to internal networks. **C:H/I:H/A:H** (Critical impact).

Q5Is exploitation threshold high? (Auth/Config)

🔓 **Threshold**: **LOW**. <br>🚫 **Auth**: None required (PR:N). <br>🌍 **Vector**: Network (AV:N). <br>👤 **UI**: None required (UI:N). Easy to exploit remotely.

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

🧪 **Exploit**: **No public PoC** listed in data. <br>⚠️ **Risk**: Despite no public code, CVSS score is **9.8** (Critical). Assume high risk of wild exploitation due to low barrier.

Q7How to self-check? (Features/Scanning)

🔍 **Check**: Scan for **vm2** dependency in `package.json`. <br>📊 **Version**: Verify if version is **< 3.10.2**. <br>🛠️ **Tool**: Use npm audit or SAST tools detecting CWE-94 in sandbox contexts.

Q8Is it fixed officially? (Patch/Mitigation)

✅ **Fixed**: **Yes**. <br>🔧 **Patch**: Upgrade to **vm2 v3.10.2** or later. <br>🔗 **Ref**: [GitHub Release](https://github.com/patriksimek/vm2/releases/tag/v3.10.2).

Q9What if no patch? (Workaround)

🚧 **Workaround**: If patching is impossible, **do not use vm2** for untrusted code. <br>🔄 **Alternative**: Use native Node.js `vm` module with strict context isolation or containerization (Docker) for isolation.

Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **CRITICAL**. <br>⏱️ **Priority**: **P0**. <br>🚀 **Action**: Patch immediately. CVSS 9.8 + Network Access + No Auth = Immediate remediation required.

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Vulnerability detail Full AI analysis (login) patriksimek CWE-94