CVE-2025-66645 HIGH

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

Vendor Zauberzeug
Product nicegui
Weakness CWE-22 · Path traversal
Published December 9, 2025
Last update December 10, 2025
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

December 9, 2025 CVE published
December 10, 2025 Record updated