GHSA-hgf8-39gv-g3f2

Suggest an improvement
Source
https://github.com/advisories/GHSA-hgf8-39gv-g3f2
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/12/GHSA-hgf8-39gv-g3f2/GHSA-hgf8-39gv-g3f2.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-hgf8-39gv-g3f2
Aliases
Published
2025-12-02T00:27:38Z
Modified
2025-12-02T01:30:23.870152Z
Severity
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
Werkzeug safe_join() allows Windows special device names
Details

Werkzeug's safe_join function allows path segments with Windows device names. On Windows, there are special device names such as CON, AUX, etc that are implicitly present and readable in every directory. send_from_directory uses safe_join to safely serve files at user-specified paths under a directory. If the application is running on Windows, and the requested path ends with a special device name, the file will be opened successfully, but reading will hang indefinitely.

Database specific 
{
    "nvd_published_at": "2025-11-29T03:16:00Z",
    "github_reviewed": true,
    "github_reviewed_at": "2025-12-02T00:27:38Z",
    "severity": "MODERATE",
    "cwe_ids": [
        "CWE-67"
    ]
}
References

Affected packages

PyPI / werkzeug

Package

Name
werkzeug
View open source insights on deps.dev
Purl
pkg:pypi/werkzeug

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.1.4

Affected versions

0.*

0.1
0.2
0.3
0.3.1
0.4
0.4.1
0.5
0.5.1
0.6
0.6.1
0.6.2
0.7
0.7.1
0.7.2
0.8
0.8.1
0.8.2
0.8.3
0.9
0.9.1
0.9.2
0.9.3
0.9.4
0.9.5
0.9.6
0.10
0.10.1
0.10.2
0.10.3
0.10.4
0.11
0.11.1
0.11.2
0.11.3
0.11.4
0.11.5
0.11.6
0.11.7
0.11.8
0.11.9
0.11.10
0.11.11
0.11.12
0.11.13
0.11.14
0.11.15
0.12
0.12.1
0.12.2
0.13
0.14
0.14.1
0.15.0
0.15.1
0.15.2
0.15.3
0.15.4
0.15.5
0.15.6
0.16.0
0.16.1

1.*

1.0.0rc1
1.0.0
1.0.1

2.*

2.0.0rc1
2.0.0rc2
2.0.0rc3
2.0.0rc4
2.0.0rc5
2.0.0
2.0.1
2.0.2
2.0.3
2.1.0
2.1.1
2.1.2
2.2.0a1
2.2.0
2.2.1
2.2.2
2.2.3
2.3.0
2.3.1
2.3.2
2.3.3
2.3.4
2.3.5
2.3.6
2.3.7
2.3.8

3.*

3.0.0
3.0.1
3.0.2
3.0.3
3.0.4
3.0.5
3.0.6
3.1.0
3.1.1
3.1.2
3.1.3