CVE-2026-26332 — AI Deep Analysis Summary

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

🚨 **Essence**: A critical Sandbox Escape in `vm2` (Node.js VM). 💥 **Consequences**: Attackers bypass isolation, executing **Arbitrary Code** on the host. Total loss of security boundary.

Q: Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: Improper handling of `SuppressedError`. 🔍 **CWE**: CWE-94 (Code Injection). The sandbox fails to suppress error contexts correctly, leaking host context.

Q: Who is affected? (Versions/Components)

📦 **Affected**: `patriksimek/vm2` library. 📉 **Versions**: All versions **prior to 3.11.0**. ✅ **Fixed**: Version 3.11.0 and later.

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

👑 **Privileges**: Full Host Access. 💾 **Data**: Read/Write arbitrary files, execute system commands. 🌐 **Impact**: Complete Server Compromise (CVSS: High/Critical).

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)

📜 **Public Exp?**: Yes. 🔗 **Proof**: GitHub Advisory GHSA-55hx-c926-fr95 confirms the flaw. ⚠️ **Status**: Known technique (SuppressedError leak). Wild exploitation likely.

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

🔍 **Check**: Scan for `vm2` dependency in `package.json`. 📊 **Version**: Check if version < 3.11.0. 🛠️ **Tool**: Use SAST/DAST tools detecting CWE-94 in Node.js sandboxes.

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

✅ **Fixed**: Yes. 🔧 **Patch**: Upgrade to **vm2 v3.11.0+**. 📝 **Ref**: See GitHub Release v3.11.0 for details.

Q: What if no patch? (Workaround)

🚧 **No Patch?**: 1. **Isolate**: Run untrusted code in separate containers/processes. 2. **Disable**: Remove `vm2` if not strictly needed. 3. **Monitor**: Log for suspicious child process spawns.

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **CRITICAL**. 🚀 **Priority**: **P0**. 📢 **Action**: Patch immediately. CVSS is High (H/H/H). No auth needed. High risk of active exploitation.

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 isolation, executing **Arbitrary Code** on the host. Total loss of security boundary.

Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: Improper handling of `SuppressedError`. <br>🔍 **CWE**: CWE-94 (Code Injection). The sandbox fails to suppress error contexts correctly, leaking host context.

Q3Who is affected? (Versions/Components)

📦 **Affected**: `patriksimek/vm2` library. <br>📉 **Versions**: All versions **prior to 3.11.0**. <br>✅ **Fixed**: Version 3.11.0 and later.

Q4What can hackers do? (Privileges/Data)

👑 **Privileges**: Full Host Access. <br>💾 **Data**: Read/Write arbitrary files, execute system commands. <br>🌐 **Impact**: Complete Server Compromise (CVSS: High/Critical).

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)

📜 **Public Exp?**: Yes. <br>🔗 **Proof**: GitHub Advisory GHSA-55hx-c926-fr95 confirms the flaw. <br>⚠️ **Status**: Known technique (SuppressedError leak). Wild exploitation likely.

Q7How to self-check? (Features/Scanning)

🔍 **Check**: Scan for `vm2` dependency in `package.json`. <br>📊 **Version**: Check if version < 3.11.0. <br>🛠️ **Tool**: Use SAST/DAST tools detecting CWE-94 in Node.js sandboxes.

Q8Is it fixed officially? (Patch/Mitigation)

✅ **Fixed**: Yes. <br>🔧 **Patch**: Upgrade to **vm2 v3.11.0+**. <br>📝 **Ref**: See GitHub Release v3.11.0 for details.

Q9What if no patch? (Workaround)

🚧 **No Patch?**: <br>1. **Isolate**: Run untrusted code in separate containers/processes. <br>2. **Disable**: Remove `vm2` if not strictly needed. <br>3. **Monitor**: Log for suspicious child process spawns.

Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **CRITICAL**. <br>🚀 **Priority**: **P0**. <br>📢 **Action**: Patch immediately. CVSS is High (H/H/H). No auth needed. High risk of active exploitation.

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