CVE-2026-6357

UNKNOWN 0.0

pip self-update functionality can import newly installed modules after wheel installation

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

Vendor	pip maintainers
Product	pip
Published	Apr 27, 2026
Last Updated	Apr 27, 2026

Stay Ahead of the Next One

Get instant alerts for pip maintainers pip

Be the first to know when new unknown vulnerabilities affecting pip maintainers pip are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

Affected Versions

Pip maintainers / pip

0 < 26.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/pypa/pip/pull/13923 ichard26.github.io: https://ichard26.github.io/blog/2026/04/whats-new-in-pip-26.1/#security-fixes

Credits

🔍 Damian Shaw Damian Shaw Richard Si Seth Larson