pip Vulnerable to Inclusion of Functionality from Untrusted Control Sphere
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.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-6357US | — | — | ||
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… | ||||
references
External citations — patches, advisories, analysis.
- http://www.openwall.com/lists/oss-security/2026/04/27/7WEB
- https://github.com/advisories/GHSA-jp4c-xjxw-mgf9ADVISORY
- https://github.com/pypa/pipPACKAGE
- https://github.com/pypa/pip/commit/b369bfc96cc524e00c267e1693290e6599c36badWEB
- https://github.com/pypa/pip/pull/13923WEB
- https://ichard26.github.io/blog/2026/04/whats-new-in-pip-26.1/#security-fixesWEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-6357ADVISORY
- https://pypi.org/project/pipPACKAGE
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