{"cve":"CVE-2026-6357","nvd":{"published":"2026-04-27T15:16:20.857","modified":"2026-06-17T11:00:42.947","status":"Awaiting Analysis","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.","cvss_v4":{"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","score":5.3},"cvss_v3":null,"cwes":["CWE-829"],"references":["https://github.com/pypa/pip/pull/13923","https://ichard26.github.io/blog/2026/04/whats-new-in-pip-26.1/#security-fixes","http://www.openwall.com/lists/oss-security/2026/04/27/7"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:33:09.003606135+00:00"},"epss":{"cve":"CVE-2026-6357","score":0.00138,"percentile":0.03198,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-jp4c-xjxw-mgf9","url":"https://osv.dev/vulnerability/GHSA-jp4c-xjxw-mgf9","summary":"pip Vulnerable to Inclusion of Functionality from Untrusted Control Sphere","modified":"2026-09-10T03:50:44.656580653Z","packages":[{"ecosystem":"PyPI","name":"pip","purl":"pkg:pypi/pip","ranges":["<26.1"],"fixed":["26.1"]}]},{"id":"PYSEC-2026-2876","url":"https://osv.dev/vulnerability/PYSEC-2026-2876","summary":"pip Vulnerable to Inclusion of Functionality from Untrusted Control Sphere","modified":"2026-07-13T16:32:57.447552480Z","packages":[{"ecosystem":"PyPI","name":"pip","purl":"pkg:pypi/pip","ranges":["<26.1"],"fixed":["26.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}