CVE-2025-66222
DeepChat Cross-Site Scripting(XSS) escalate to Remote Code Execution(RCE)
- State
- Published
- Severity
- 9.7 Critical
- Published
- Dec 3, 2025
- Updated
- Dec 3, 2025
- Reserved
- Nov 24, 2025
Description
DeepChat is a smart assistant uses artificial intelligence. In 0.5.0 and earlier, there is a Stored Cross-Site Scripting (XSS) vulnerability in the Mermaid diagram renderer allows an attacker to execute arbitrary JavaScript within the application context. By leveraging the exposed Electron IPC bridge, this XSS can be escalated to Remote Code Execution (RCE) by registering and starting a malicious MCP (Model Context Protocol) server.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.7 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H | GitHub_M |
Weaknesses
- CWE-94 Improper Control of Generation of Code ('Code Injection')
Affected Products
| Product | Versions |
|---|---|
deepchatThinkInAIXYZ |
|
References
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