CVE-2024-21512 — AI Deep Analysis Summary

Q: Who is affected? (Versions/Components)

📦 **Affected**: `mysql2` package for Node.js. 📅 **Version**: All versions **prior to 3.9.8**. 👤 **Vendor**: Andrey Sidorov (Personal Developer). Check your `package.json` immediately! 🕵️♂️

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

🔍 **Self-Check**: 1. Scan `package-lock.json` for `mysql2` < 3.9.8. 2. Search codebase for `nestTables` usage. 3. Check if inputs to `nestTables` are user-controlled. 🛠️ Use Snyk or npm audit to detect! 📡

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

✅ **Fixed**: **YES**. 🔧 **Patch**: Upgrade to **mysql2 version 3.9.8** or later. 🔗 **Commit**: efe3db527a2c94a63c2d14045baba8dfefe922bc. 📥 Run `npm install mysql2@latest`! 🚀

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **HIGH**. 📊 **CVSS**: 6.5 (Medium-High impact on Integrity). ⏳ **Priority**: Patch immediately. Since it's a library used by many, the attack surface is broad. Don't wait! ⏰💣

Updated May 08, 2026 CVSS 8.2 · High

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**: Prototype Pollution in `mysql2` Node.js client. <br>📉 **Consequences**: Attackers can inject malicious properties into JavaScript objects via `nestTables`.…

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Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: CWE-1321 (Prototype Pollution). <br>🔍 **Flaw**: Improper input sanitization when using the `nestTables` option.…

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Q3Who is affected? (Versions/Components)

📦 **Affected**: `mysql2` package for Node.js. <br>📅 **Version**: All versions **prior to 3.9.8**. <br>👤 **Vendor**: Andrey Sidorov (Personal Developer). Check your `package.json` immediately! 🕵️‍♂️

Q4What can hackers do? (Privileges/Data)

🎯 **Attacker Actions**: <br>1. **Modify Object Properties**: Inject `__proto__` or `constructor` keys. <br>2. **Data Integrity**: Corrupt application state globally. <br>3.…

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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). <br>📊 **Complexity**: Low (AC:L).…

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

📜 **Public Exp?**: No specific PoC code provided in the data. <br>🔗 **References**: Snyk and GitHub commits confirm the flaw.…

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Q7How to self-check? (Features/Scanning)

🔍 **Self-Check**: <br>1. Scan `package-lock.json` for `mysql2` < 3.9.8. <br>2. Search codebase for `nestTables` usage. <br>3. Check if inputs to `nestTables` are user-controlled. <br>🛠️ Use Snyk or npm audit to detect! 📡

Q8Is it fixed officially? (Patch/Mitigation)

✅ **Fixed**: **YES**. <br>🔧 **Patch**: Upgrade to **mysql2 version 3.9.8** or later. <br>🔗 **Commit**: efe3db527a2c94a63c2d14045baba8dfefe922bc. <br>📥 Run `npm install mysql2@latest`! 🚀

Q9What if no patch? (Workaround)

🛡️ **Workaround (No Patch)**: <br>1. **Disable `nestTables`**: If possible, avoid using this feature. <br>2. **Input Sanitization**: Strictly validate and clean all inputs passed to MySQL queries. <br>3.…

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Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **HIGH**. <br>📊 **CVSS**: 6.5 (Medium-High impact on Integrity). <br>⏳ **Priority**: Patch immediately. Since it's a library used by many, the attack surface is broad. Don't wait! ⏰💣

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Vulnerability detail Full AI analysis (login) n/a CWE-1321