CVE-2026-3087: Python

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

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.

Affected products

• Python Python: up to and including 3.14.4; version 3.15.0 only

Published 2026-04-27. Last modified 2026-08-13.