{"id":"DEBIAN-CVE-2026-19816","details":"A flaw was found in PackageKit. PackageKit skips the polkit authorization check for transactions carrying the SIMULATE (dry-run) flag. In the dnf5 backend, the RepoRemove handler ignores that contract and always executes the real transaction because its guard is written as (role == REPO_REMOVE || !SIMULATE), which is always true for RepoRemove. An unprivileged local user can therefore perform a genuine package uninstall while claiming to simulate. This vulnerability only affects systems using PackageKit with the dnf5 backend.","modified":"2026-09-21T08:00:06.557359981Z","published":"2026-09-14T20:16:43.760Z","upstream":["CVE-2026-19816"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-19816"}],"affected":[{"package":{"name":"packagekit","ecosystem":"Debian:12","purl":"pkg:deb/debian/packagekit?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.6-5","1.2.6-5+deb12u1","1.2.7-1","1.2.8-1","1.2.8-2","1.3.0-1","1.3.0-2","1.3.0-3","1.3.1-1","1.3.2-1","1.3.3-1","1.3.4-1","1.3.4-3","1.3.5-1","1.3.6-1","1.4.0-1"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-19816.json"}},{"package":{"name":"packagekit","ecosystem":"Debian:13","purl":"pkg:deb/debian/packagekit?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.1-1","1.3.1-1+deb13u1","1.3.2-1","1.3.3-1","1.3.4-1","1.3.4-3","1.3.5-1","1.3.6-1","1.4.0-1"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-19816.json"}},{"package":{"name":"packagekit","ecosystem":"Debian:14","purl":"pkg:deb/debian/packagekit?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.0-1"}]}],"versions":["1.3.1-1","1.3.2-1","1.3.3-1","1.3.4-1","1.3.4-3","1.3.5-1","1.3.6-1"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-19816.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"}]}