CVE-2026-6357
pip self-update functionality can import newly installed modules after wheel installation
- State
- Published
- Severity
- 5.3 Medium
- Published
- Apr 27, 2026
- Updated
- Apr 27, 2026
- Reserved
- Apr 15, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 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 | PSF |
Weaknesses
- CWE-829 Inclusion of Functionality from Untrusted Control Sphere
Affected Products
| Product | Versions |
|---|---|
pipPip maintainers |
|
References
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