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CVE-2025-66562— TUUI vulnerable to Remote Code Execution (RCE) via XSS in Markdown ECharts Rendering

Quick assessment

Affected
AI-QL tuui
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

TUUI是AIQL开源的一个MCP客户端。 TUUI 1.3.4之前版本存在代码注入漏洞，该漏洞源于Markdown渲染组件存在不安全的跨站脚本漏洞，可能导致远程代码执行。

AI Predicted 8.0 Difficulty: Trivial EPSS 0.51% · P41
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I. Basic Information for CVE-2025-66562

Vulnerability Information
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Vulnerability Title
TUUI vulnerable to Remote Code Execution (RCE) via XSS in Markdown ECharts Rendering
Source: CVE Program / CVE List V5
Vulnerability Description
TUUI is a desktop MCP client designed as a tool unitary utility integration. Prior to 1.3.4, a critical Remote Code Execution (RCE) vulnerability exists in Tuui due to an unsafe Cross-Site Scripting (XSS) flaw in the Markdown rendering component. Tuui allows the execution of arbitrary JavaScript within ECharts code blocks. Combined with an exposed IPC interface that allows spawning processes, an attacker can execute arbitrary system commands on the victim's machine simply by having them view a malicious Markdown message. This vulnerability is fixed in 1.3.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
TUUI 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TUUI是AIQL开源的一个MCP客户端。 TUUI 1.3.4之前版本存在代码注入漏洞，该漏洞源于Markdown渲染组件存在不安全的跨站脚本漏洞，可能导致远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
AI-QL tuui < 1.3.4 -

II. Public POCs for CVE-2025-66562

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III. Intelligence Information for CVE-2025-66562

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Vendor Advisories for CVE-2025-66562 (1)

IV. Related Vulnerabilities

Same weakness: CWE-79

V. Comments for CVE-2025-66562

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