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CVE-2025-66645PYSEC-2026-1700GHSA-HXP3-63HC-5366

NiceGUI Path Traversal Vulnerability in app.add_media_files() Allows Arbitrary File Reading

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 3.4.0
1 proof of concept on GitHub
  • Exploitation: poc
  • Automatable: yes
  • Technical impact: partial

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: poc · Automatable: yes · Technical impact: partial

  3. Record last updated

Affected versions

  • zauberzeug nicegui

    fixed in 3.4.0

  • niceguiPyPI

    fixed in 3.4.0

References 3

GitHub · zauberzeug/nicegui

GitHub · prokeon5991-wq/cve-2025-66645