CVE-2026-6357

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

Published: Apr 27, 2026Updated: Apr 27, 2026 Sources: CVE List NVDCWE-829

N/ACVSS

NVD MITRE

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.

No summary for this CVE yet.

Weaknesses

CWE-829

Affected Products

Pip maintainers

package-ecosystemaka pip maintainer

pipLibrary

OSS Libraries / pypi

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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References

https://github.com/pypa/pip/pull/13923

github.com

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

ichard26.github.io

http://www.openwall.com/lists/oss-security/2026/04/27/7

openwall.com

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