{"id":"CVE-2026-19816","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-19816","summary":"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…","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.","published":"2026-09-14T20:16:43.760","modified":"2026-09-14T20:16:43.760","cvss":{"score":7.1,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/PackageKit/PackageKit/commit/33be77b3ecd3b566ca117358dc18c58c964e627b","label":"PackageKit/PackageKit@33be77b"},"references":[{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2515940"},{"type":"WEB","url":"https://github.com/PackageKit/PackageKit/commit/33be77b3ecd3b566ca117358dc18c58c964e627b"},{"type":"WEB","url":"https://github.com/PackageKit/PackageKit/security/advisories/GHSA-g5gf-h68q-gxc8"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-14T20:16:43.760"}}