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Description

When pip is installing and extracting a maliciously crafted wheel archive, files may be extracted outside the installation directory. The path traversal is limited to prefixes of the installation directory, thus isn't able to inject or overwrite executable files in typical situations.

PUBLISHED Reserved 2026-01-30 | Published 2026-02-02 | Updated 2026-02-02 | Assigner PSF




LOW: 2.0CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

Default status
unaffected

Any version before 26.0
affected

References

github.com/pypa/pip/pull/13777 patch

github.com/...ommit/8e227a9be4faa9594e05d02ca05a413a2a4e7735 patch

mail.python.org/.../thread/WIEA34D4TABF2UNQJAOMXKCICSPBE2DJ/ vendor-advisory

cve.org (CVE-2026-1703)

nvd.nist.gov (CVE-2026-1703)

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