Vulnerability Database

314,496

Total vulnerabilities in the database

CVE-2025-66222

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.

  • Published: Dec 3, 2025
  • Updated: Dec 6, 2025
  • CVE: CVE-2025-66222
  • Severity: Critical
  • Exploit:

CVSS v3:

  • Severity: Critical
  • Score: 9.6
  • AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

CWEs:

OWASP TOP 10:

Software From Fixed in
thinkinai / deepchat - 0.5.0.x