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CVE-2025-66645— NiceGUI Path Traversal Vulnerability in app.add_media_files() Allows Arbitrary File Reading

Quick assessment

Affected
zauberzeug nicegui
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

NiceGUI是NiceGUI开源的一个易于使用、基于 Python 的 UI 框架。 NiceGUI 3.3.1及之前版本存在路径遍历漏洞，该漏洞源于App.add_media_files函数存在缺陷，可能导致目录遍历攻击。

CVSS 7.5 · High EPSS 1.12% · P66

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery
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I. Basic Information for CVE-2025-66645

Vulnerability Information
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Vulnerability Title
NiceGUI Path Traversal Vulnerability in app.add_media_files() Allows Arbitrary File Reading
Source: CVE Program / CVE List V5
Vulnerability Description
NiceGUI is a Python-based UI framework. Versions 3.3.1 and below are vulnerable to directory traversal through the App.add_media_files() function, which allows a remote attacker to read arbitrary files on the server filesystem. This issue is fixed in version 3.4.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
NiceGUI 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NiceGUI是NiceGUI开源的一个易于使用、基于 Python 的 UI 框架。 NiceGUI 3.3.1及之前版本存在路径遍历漏洞，该漏洞源于App.add_media_files函数存在缺陷，可能导致目录遍历攻击。
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
zauberzeug nicegui < 3.4.0 -

II. Public POCs for CVE-2025-66645

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8165 chars
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III. Intelligence Information for CVE-2025-66645

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Patches & Fixes for CVE-2025-66645 (1)

Vendor Advisories for CVE-2025-66645 (1)

IV. Related Vulnerabilities

Same product: nicegui
Same vendor: zauberzeug
Same weakness: CWE-22

V. Comments for CVE-2025-66645

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