DOMLogger++ Client-Side Bug Hunting Tool

Client-side vulnerabilities like DOM XSS, postMessage flaws, prototype pollution chains, and sanitizer bypasses are among the hardest bugs to catch 😵‍💫. Static analysis and manual reviews often miss what actually happens at runtime.
That’s where DOMLogger++ steps in 💥- and changes the game.

🧠 What Is DOMLogger++?​

DOMLogger++ is a powerful open-source browser extension that monitors, intercepts, and debugs dangerous DOM JavaScript sinks in real time ⚡.
It helps you track how attacker-controlled data flows into sensitive APIs like innerHTML, eval, and document.write - right when the code executes.

---

🎯 Why DOMLogger++ Matters​

Modern web apps lean heavily on client-side frameworks, which dramatically increase the attack surface. This leads to hard-to-spot issues such as:

• DOM-Based XSS
• Client-side template injection
• Prototype pollution exploitation
• postMessage attack vectors
• CSP and sanitization bypasses

DOMLogger++ automatically visualizes source-to-sink flows, so you can see the vulnerability chain instantly 🔎⚡.

---

⚙️ Key Features You’ll Love​

DOMLogger++ is built for serious AppSec work 🧪:

• 🪝 Hook classes, functions, attributes, and events
• 🔎 Advanced regex-based filtering
• ⚡ Runtime interception with stack-trace analysis
• 🔔 Real-time alerts on suspicious execution
• 🧾 Dedicated DevTools logging panel
• 🌐 Domain-specific configurations
• 🧪 Security header manipulation for testing
• 🧬 Fully customizable JSON-based configs

---

🚀 What You Can Do with DOMLogger++​

Security researchers and bug bounty hunters use it for:
✔ Finding DOM XSS in complex SPAs
✔ Tracking sanitizer bypass behavior
✔ Debugging postMessage issues
✔ Analyzing prototype pollution chains
✔ Advanced bug bounty research 🐞

---

🧪 Example: Hook a Dangerous Sink​

Here’s a simple idea of what DOMLogger++ watches under the hood 👇

// Example: dangerous sink
element.innerHTML = userInput;

// DOMLogger++ detects:
// source → userInput
// sink   → innerHTML
// stack  → full call trace

💡 Instead of guessing, you see the full execution path in real time.

---

🆓 Open-Source & Free​

DOMLogger++ is completely free and open-source, available for:

• 🌐 Chrome / Chromium browsers
• 🦊 Firefox

Perfect for every serious AppSec researcher and bug bounty hunter.

---

🔗 Resources​

• GitHub: https://github.com/kevin-mizu/domloggerpp
• Chrome Extension: https://chromewebstore.google.com/search/DOMLogger++
• Firefox Add-on: https://addons.mozilla.org/firefox/addon/domloggerpp/

🔥 Final Thoughts​

If you’re serious about modern client-side bug hunting, DOMLogger++ isn’t optional anymore - it’s essential 🧠🔥.