CVE-2026-39844

MEDIUM

5.9

Description

NiceGUI is a Python-based UI framework. Prior to 3.10.0, Since PurePosixPath only recognizes forward slashes (/) as path separators, an attacker can bypass this sanitization on Windows by using backslashes (\) in the upload filename. Applications that construct file paths using file.name (a pattern demonstrated in NiceGUI's bundled examples) are vulnerable to arbitrary file write on Windows. This vulnerability is fixed in 3.10.0.

Details CVE

Score CVSS v3.15.9

SeveriteMEDIUM

Vecteur CVSSCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Vecteur d'attaqueNETWORK

ComplexiteHIGH

Privileges requisNONE

Interaction utilisateurNONE

Publie4/8/2026

Derniere modification4/8/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-22

References

https://github.com/zauberzeug/nicegui/commit/d38a702e3af2da5b0708f689be8d71413fc77056(security-advisories@github.com)

https://github.com/zauberzeug/nicegui/releases/tag/v3.10.0(security-advisories@github.com)

https://github.com/zauberzeug/nicegui/security/advisories/GHSA-w8wv-vfpc-hw2w(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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