CVE-2026-6357 (GCVE-0-2026-6357)

Vulnerability from cvelistv5 – Published: 2026-04-27 14:19 – Updated: 2026-04-27 22:17
VLAI
Title
pip self-update functionality can import newly installed modules after wheel installation
Summary
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.
Severity
5.3 (Medium)
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
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-27 16:08 UTC
CWE
  • CWE-829 - Inclusion of Functionality from Untrusted Control Sphere
Assigner
PSF CNA under the mitre root
CNA scorecard B 80/100 over 28 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Pip maintainers pip Affected: 0 , < 26.1 (python)
guessed Create a notification for this product.
Credits
Damian Shaw Damian Shaw Richard Si Seth Larson
Show details on NVD website
To clipboard 

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