pallets/werkzeug · Security
Werkzeug safe_join not safe on Windows
- GHSA ID
- GHSA-f9vj-2wh5-fj8j
- CVE ID
- CVE-2024-49766
- Severity
- medium
- Published
- Updated
- CVSS v4
- 6.3 · CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Description
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.
CWEs
- CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
References
- https://github.com/pallets/werkzeug/security/advisories/GHSA-f9vj-2wh5-fj8j ↗
- https://github.com/pallets/werkzeug/commit/2767bcb10a7dd1c297d812cc5e6d11a474c1f092 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2024-49766 ↗
- https://github.com/pallets/werkzeug/releases/tag/3.0.6 ↗
- https://security.netapp.com/advisory/ntap-20250131-0005 ↗
- https://github.com/advisories/GHSA-f9vj-2wh5-fj8j ↗