CVE-2026-19816

high

Published 2026-09-14 · Modified 2026-09-14

Discuss on Community Propose mitigation

CVSS v3

7.1

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CVSS v4 NEW

—

not yet in upstream

VIR risk

7.1

Description

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.

Predictions

Exploit likelihood

70%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

Mitigation details

Source: Debian Security Tracker · View original ↗ · DFSG

CVE-2026-19816 NameCVE-2026-19816 SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) Vulnerable and fixed packages The table below lists information on source packages. Source PackageReleaseVersionStatus packagekit (PTS)bookworm, bookworm (security)1.2.6-5+deb12u1vulnerable trixie…

CVE-2026-19816

Name	CVE-2026-19816
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
packagekit (PTS)	bookworm, bookworm (security)	1.2.6-5+deb12u1	vulnerable
	trixie (security), trixie	1.3.1-1+deb13u1	vulnerable
	forky	1.3.6-1	vulnerable
	sid	1.4.0-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
packagekit	source	(unstable)	1.4.0-1

Notes

https://bugzilla.redhat.com/show_bug.cgi?id=2515940
https://github.com/PackageKit/PackageKit/security/advisories/GHSA-g5gf-h68q-gxc8
Fixed by: https://github.com/PackageKit/PackageKit/commit/33be77b3ecd3b566ca117358dc18c58c964e627b (v1.4.0)

Home - Debian Security - Source (Git)

Apply commands

text fix

Notes

https://bugzilla.redhat.com/show_bug.cgi?id=2515940https://github.com/PackageKit/PackageKit/security/advisories/GHSA-g5gf-h68q-gxc8Fixed by: https://github.com/PackageKit/PackageKit/commit/33be77b3ecd3b566ca117358dc18c58c964e627b (v1.4.0)

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Debian Mixed 4 releases

Version	Status	Fixed in
trixie	Affected	—
sid	Fixed	`1.4.0-1`
forky	Affected	—
bookworm	Affected	—

References

CWEs

CWE-863

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.