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.
Advisories

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Fixes

Solution

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Workaround

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History

Mon, 27 Apr 2026 17:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-829
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 27 Apr 2026 15:00:00 +0000

Type Values Removed Values Added
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.
Title pip self-update functionality can import newly installed modules after wheel installation
References
Metrics cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: PSF

Published:

Updated: 2026-04-27T16:08:47.582Z

Reserved: 2026-04-15T13:55:02.734Z

Link: CVE-2026-6357

cve-icon Vulnrichment

Updated: 2026-04-27T16:07:29.489Z

cve-icon NVD

Status : Received

Published: 2026-04-27T15:16:20.857

Modified: 2026-04-27T17:16:43.670

Link: CVE-2026-6357

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses