Unrated severityNVD Advisory· Published Dec 3, 2025· Updated Dec 3, 2025
DeepChat Cross-Site Scripting(XSS) escalate to Remote Code Execution(RCE)
CVE-2025-66222
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2<=0.5.0+ 1 more
- (no CPE)range: <=0.5.0
- (no CPE)range: < 0.5.0
Patches
Vulnerability mechanics
References
2- github.com/ThinkInAIXYZ/deepchat/commit/371ca7b42e3685aee6e3f0c61e85277ed1ff4db7mitrex_refsource_MISC
- github.com/ThinkInAIXYZ/deepchat/security/advisories/GHSA-v8v5-c872-mf8rmitrex_refsource_CONFIRM
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