CVE-2026-3087

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.

CVSS 4.0

6.0CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS

0.6% chance of exploitation in the next 30 days; higher than 45% of CVEs (scores of 2026-10-26)

CWE

CWE-22

Published

2026-04-27

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

Affected

• python:python

References

• https://github.com/python/cpython/commit/1071290169f85c09cf767c1099564a9426cdc7e8
• https://github.com/python/cpython/commit/65b255416ae217bf0e22085be3c1976cea18bd8c
• https://github.com/python/cpython/commit/7ef7dd0a74f47facd1fadcbc77f8fb03beb5eb4d
• https://github.com/python/cpython/commit/8e13025747e1ca72e86d1f35637123f9c306f0cb
• https://github.com/python/cpython/commit/8ee6aff14054b37b53e47194a2fa313e98163c94

Check your stackJSON