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Medium severityNVD Advisory· Published Apr 27, 2026· Updated Apr 27, 2026

CVE-2026-6357

CVE-2026-6357

Description

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.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
pipPyPI
< 26.126.1

Affected products

94

Patches

Vulnerability mechanics

References

6

News mentions

0

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