CVE-2026-21860

MEDIUM

5.3

Description

Werkzeug is a comprehensive WSGI web application library. Prior to version 3.1.5, Werkzeug's safe_join function allows path segments with Windows device names that have file extensions or trailing spaces. On Windows, there are special device names such as CON, AUX, etc that are implicitly present and readable in every directory. Windows still accepts them with any file extension, such as CON.txt, or trailing spaces such as CON. This issue has been patched in version 3.1.5.

Details CVE

Score CVSS v3.15.3

SeveriteMEDIUM

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

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie1/8/2026

Derniere modification2/2/2026

Sourcenvd

Observations honeypot0

Produits affectes

microsoft:windowspalletsprojects:werkzeug

Faiblesses (CWE)

CWE-67

References

https://github.com/pallets/werkzeug/commit/7ae1d254e04a0c33e241ac1cca4783ce6c875ca3(security-advisories@github.com)

https://github.com/pallets/werkzeug/security/advisories/GHSA-87hc-h4r5-73f7(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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