CVE-2026-3087

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.

Affected Platforms

Weakness Type

CWE-22

References

• https://github.com/python/cpython/commit/1071290169f85c09cf767c1099564a9426cdc7e…
• https://github.com/python/cpython/commit/65b255416ae217bf0e22085be3c1976cea18bd8…
• https://github.com/python/cpython/commit/7ef7dd0a74f47facd1fadcbc77f8fb03beb5eb4…
• https://github.com/python/cpython/commit/8e13025747e1ca72e86d1f35637123f9c306f0c…
• https://github.com/python/cpython/commit/8ee6aff14054b37b53e47194a2fa313e98163c9…
• https://github.com/python/cpython/commit/a6650a2cdf0c49fb8ce0c982903aa2aa274beef…