PT-2026-59513 · Pypi · Pip

Published 2026-07-13 · Updated 2026-07-13

OSV

CVSS v4.0

5.3

Medium

Base vector

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

pip prior to version 26.1 would run self-update check functionality after installing wheel files which required importing well-known Python modules names. These module imports were intentionally deferred to increase startup time of the pip CLI. The patch changes self-update functionality to run before wheels are installed to prevent newly-installed modules from being imported shortly after the installation of a wheel package. Users should still review package contents prior to installation.

Fix

Related Identifiers

PYSEC-2026-2876

Affected Products

Pip

References · 9

• https://osv.dev/vulnerability/PYSEC-2026-2876 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-6357 · Security Note
• https://github.com/pypa/pip/commit/b369bfc96cc524e00c267e1693290e6599c36bad · Note
• https://github.com/pypa/pip/pull/13923 · Note
• https://github.com/pypa/pip · Note
• https://ichard26.github.io/blog/2026/04/whats-new-in-pip-26.1/#security-fixes · Note
• https://github.com/advisories/GHSA-jp4c-xjxw-mgf9 · Note
• https://pypi.org/project/pip · Note
• http://openwall.com/lists/oss-security/2026/04/27/7 · Note