CVE-2026-19816 — PackageKit: dnf5 backend ignores SIMULATE on RepoRemove
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 handle…
Published: 2026-09-14 · CVSS: 7.1 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7