CVE-2026-3087
Severity CVSS v4.0:
MEDIUM
Type:
CWE-22
Path Traversal
Publication date:
27/04/2026
Last modified:
13/05/2026
Description
If `shutil.unpack_archive()` is given a ZIP archive with an absolute Windows path containing a drive (`C:\\...`) then the archive will be extracted outside the target directory which is different than other operating systems. Only Windows is affected by this vulnerability.
Impact
Base Score 4.0
6.00
Severity 4.0
MEDIUM
Base Score 3.x
7.50
Severity 3.x
HIGH
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:a:python:python:*:*:*:*:*:*:*:* | 3.14.4 (including) | |
| cpe:2.3:a:python:python:3.15.0:alpha_1:*:*:*:*:*:* | ||
| cpe:2.3:a:python:python:3.15.0:alpha_2:*:*:*:*:*:* | ||
| cpe:2.3:a:python:python:3.15.0:alpha_3:*:*:*:*:*:* | ||
| cpe:2.3:a:python:python:3.15.0:alpha_4:*:*:*:*:*:* | ||
| cpe:2.3:a:python:python:3.15.0:alpha_5:*:*:*:*:*:* | ||
| cpe:2.3:a:python:python:3.15.0:alpha_6:*:*:*:*:*:* | ||
| cpe:2.3:a:python:python:3.15.0:alpha_7:*:*:*:*:*:* | ||
| cpe:2.3:a:python:python:3.15.0:alpha_8:*:*:*:*:*:* | ||
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* |
To consult the complete list of CPE names with products and versions, see this page
References to Advisories, Solutions, and Tools
- https://github.com/python/cpython/commit/ab5ef98af693bded74a738570e81ea70abef2840
- https://github.com/python/cpython/commit/b01e594fbe754a960212f908d047294e880b52fd
- https://github.com/python/cpython/commit/fc829e88753858c8ac669594bf0093f44948c0f4
- https://github.com/python/cpython/issues/146581
- https://github.com/python/cpython/pull/146591
- https://mail.python.org/archives/list/security-announce@python.org/thread/X6FXE5C6KDKOVNX3EC3DWD5RUPFWOZA4/
- http://www.openwall.com/lists/oss-security/2026/04/28/9