CVE-2026-19816
7.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
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 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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
1.3.4 < 1.4.0 | affected | ||
| Fedora | Fedora | 1.3.4 < 1.4.0 | affected |
Weaknesses
- CWE-863: Incorrect Authorization
References
- https://github.com/PackageKit/PackageKit/commit/33be77b3ecd3b566ca117358dc18c58c964e627b
- https://github.com/PackageKit/PackageKit/security/advisories/GHSA-g5gf-h68q-gxc8
- https://bugzilla.redhat.com/show_bug.cgi?id=2515940
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