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.
History

Wed, 13 May 2026 16:30:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft
Microsoft windows
Python python
CPEs cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
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:-:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft windows
Python python
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}


Wed, 29 Apr 2026 16:15:00 +0000


Tue, 28 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 28 Apr 2026 06:30:00 +0000

Type Values Removed Values Added
References

Tue, 28 Apr 2026 00:30:00 +0000

Type Values Removed Values Added
First Time appeared Python
Python cpython
Vendors & Products Python
Python cpython

Mon, 27 Apr 2026 21:15:00 +0000

Type Values Removed Values Added
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.
Title shutil.unpack_archive() doesn't check for Windows absolute paths in ZIPs
Weaknesses CWE-22
References
Metrics cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: PSF

Published:

Updated: 2026-05-12T13:25:02.962Z

Reserved: 2026-02-23T23:14:46.433Z

Link: CVE-2026-3087

cve-icon Vulnrichment

Updated: 2026-04-28T05:07:42.331Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-27T21:16:42.480

Modified: 2026-05-13T16:27:11.110

Link: CVE-2026-3087

cve-icon Redhat

No data.