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CVE-2025-66222

🚨 CRITICAL

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 execu...

Published
Dec 03, 2025
Last Modified
Dec 05, 2025
Views
9
Bookmarks
0

Description

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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.

Affected Products (1)

thinkinai - deepchat

Version: *

CVSS Scores

CVSS 3.1 9.6
9.6
CRITICAL
CVSS 2.0 9.6

References

github.com github.com

Additional Information

Source
security-advisories@github.com
State
Analyzed

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