{"id":"DEBIAN-CVE-2026-6357","details":"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.","modified":"2026-09-14T17:03:25.968406771Z","published":"2026-04-27T15:16:20.857Z","upstream":["CVE-2026-6357"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-6357"}],"affected":[{"package":{"name":"python-pip","ecosystem":"Debian:12","purl":"pkg:deb/debian/python-pip?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["23.0.1+dfsg-1","23.1.2+dfsg-1","23.1.2+dfsg-2","23.2+dfsg-1","23.2.1+dfsg-1","23.3+dfsg-1","24.0+dfsg-1","24.0+dfsg-2","24.1+dfsg-1","24.1.1+dfsg-1","24.2+dfsg-1","24.3.1+dfsg-1","25.0+dfsg-1","25.0.1+dfsg-1","25.1+dfsg-1","25.1.1+dfsg-1","25.2+dfsg-1","25.3+dfsg-1","26.0+dfsg-1","26.0.1+dfsg-1","26.1.1+dfsg-1","26.1.2+dfsg-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6357.json"}},{"package":{"name":"python-pip","ecosystem":"Debian:13","purl":"pkg:deb/debian/python-pip?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["25.1.1+dfsg-1","25.2+dfsg-1","25.3+dfsg-1","26.0+dfsg-1","26.0.1+dfsg-1","26.1.1+dfsg-1","26.1.2+dfsg-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6357.json"}},{"package":{"name":"python-pip","ecosystem":"Debian:14","purl":"pkg:deb/debian/python-pip?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"26.1.1+dfsg-1"}]}],"versions":["25.1.1+dfsg-1","25.2+dfsg-1","25.3+dfsg-1","26.0+dfsg-1","26.0.1+dfsg-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6357.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}