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CVE-2025-67744— Mermaid XSS vulnerability leads to Remote Code Execution

CVSS 9.7 · Critical EPSS 0.62% · P47
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I. Basic Information for CVE-2025-67744

Vulnerability Information
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Vulnerability Title
Mermaid XSS vulnerability leads to Remote Code Execution
Source: CVE Program / CVE List V5
Vulnerability Description
DeepChat is an open-source artificial intelligence agent platform that unifies models, tools, and agents. Prior to version 0.5.3, a security vulnerability exists in the Mermaid diagram rendering component that allows arbitrary JavaScript execution. Due to the exposure of the Electron IPC renderer to the DOM, this Cross-Site Scripting (XSS) flaw escalates to full Remote Code Execution (RCE), allowing an attacker to execute arbitrary system commands. Two concurrent issues, unsafe Mermaid configuration and an exposed IPC interface, cause this issue. Version 0.5.3 contains a patch.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
DeepChat 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
DeepChat是ThinkInAIXYZ开源的一款智能助手。 DeepChat 0.5.3之前版本存在代码注入漏洞，该漏洞源于Mermaid图表渲染组件存在跨站脚本问题，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)

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Affected Products

VendorProductAffected VersionsCPESubscribe
ThinkInAIXYZdeepchat < 0.5.3 -

II. Public POCs for CVE-2025-67744

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 5898 chars
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III. Intelligence Information for CVE-2025-67744

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Patches & Fixes for CVE-2025-67744 (1)

Vendor Advisories for CVE-2025-67744 (1)

IV. Related Vulnerabilities

Same product: deepchat
Same vendor: ThinkInAIXYZ
Same weakness: CWE-94

V. Comments for CVE-2025-67744

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