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.
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Fixes

Solution

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Workaround

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History

Wed, 03 Dec 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 03 Dec 2025 19:00:00 +0000

Type Values Removed Values Added
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.
Title DeepChat Cross-Site Scripting(XSS) escalate to Remote Code Execution(RCE)
Weaknesses CWE-94
References
Metrics cvssV3_1

{'score': 9.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-12-03T19:10:17.039Z

Reserved: 2025-11-24T23:01:29.679Z

Link: CVE-2025-66222

cve-icon Vulnrichment

Updated: 2025-12-03T19:10:11.921Z

cve-icon NVD

Status : Received

Published: 2025-12-03T19:15:58.237

Modified: 2025-12-03T19:15:58.237

Link: CVE-2025-66222

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.