Werkzeug safe_join not safe on Windows
On Python < 3.11 on Windows, `os.path.isabs()` does not catch UNC paths like `//server/share`. Werkzeug's `safe_join()` relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python >= 3.11, or not using Windows, are not vulnerable.
01
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2024-49766US | medium5.3 | — | ||
Werkzeug is a Web Server Gateway Interface web application library. On Python < 3.11 on Windows, os.path.isabs() does not catch UNC paths like //server/share. Werkzeug's safe_join(… | ||||
02
references
External citations — patches, advisories, analysis.
- https://github.com/pallets/werkzeugPACKAGE
- https://github.com/pallets/werkzeug/commit/2767bcb10a7dd1c297d812cc5e6d11a474c1f092WEB
- https://github.com/pallets/werkzeug/releases/tag/3.0.6WEB
- https://github.com/pallets/werkzeug/security/advisories/GHSA-f9vj-2wh5-fj8jWEB
- https://nvd.nist.gov/vuln/detail/CVE-2024-49766ADVISORY
- https://security.netapp.com/advisory/ntap-20250131-0005WEB
scry
Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.
Free scan