CVE-2025-66222 — AI Deep Analysis Summary

🚨 **Essence**: DeepChat (v0.5.0 & earlier) has a **Code Injection** flaw. 📉 **Consequences**: Stored XSS in Mermaid charts can escalate to **Remote Code Execution (RCE)**.…

🛡️ **Root Cause**: **CWE-94** (Code Injection). 🧠 **Flaw**: The **Mermaid chart renderer** fails to sanitize inputs, allowing stored malicious scripts to execute.…

👥 **Affected**: **ThinkInAIXYZ DeepChat**. 📦 **Version**: **0.5.0 and prior**. 🔄 Any instance running these versions is vulnerable. 📅 Published: Dec 3, 2025.

💻 **Hackers Can**: Execute arbitrary code on the server. 🕵️ **Privileges**: Full system control (High CVSS). 📂 **Data**: Complete access to sensitive data.…

🔓 **Threshold**: **Low**. 🚫 **Auth**: No privileges required (PR:N). 🖱️ **UI**: Requires User Interaction (UI:R) – likely clicking/viewing a malicious chart. 🌍 **Network**: Network exploitable (AV:N).

🚫 **Public Exp?**: **No**. 📝 **PoC**: Empty in data. 🔒 **Status**: Advisory published, but no wild exploitation or public PoC detected yet. 🛑 Stay vigilant!

🔍 **Self-Check**: Scan for **DeepChat v0.5.0**. 📊 Look for **Mermaid chart** rendering features. 🧪 Test input sanitization in chart inputs. 📡 Use vulnerability scanners targeting CWE-94.

✅ **Fixed?**: **Yes**. 🛠️ **Patch**: Commit `371ca7b` fixes the issue. 🔗 **Ref**: GitHub Security Advisory GHSA-v8v5-c872-mf8r. 📥 **Action**: Update to the latest version immediately.

🚧 **No Patch?**: Disable **Mermaid chart** rendering if possible. 🚫 **Input Sanitization**: Manually filter user inputs for scripts. 🛑 **Isolate**: Restrict network access to the vulnerable instance.…

🔥 **Urgency**: **CRITICAL**. 🚨 **Priority**: **P1**. ⚡ **Reason**: RCE potential + No Auth required. 🏃 **Action**: Patch **IMMEDIATELY**. Don't wait for user interaction reports!