Answer in brief
CVE-2026-19816 records a High severity (CVSS 7.1) vulnerability in PackageKit: dnf5 backend ignores SIMULATE on RepoRemove. The current sources do not mark it as known exploited. The current feed maps Fedora/Fedora (generic), PackageKit (generic), Fedora/PackageKit (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Fedora/Fedora (generic), PackageKit (generic), Fedora/PackageKit (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Fedora/Fedorageneric | >=1.3.4 <1.4.0 | 1.4.0 |
| PackageKitgeneric | >=1.3.4 <1.4.0 | 1.4.0 |
| Fedora/PackageKitgeneric | >=1.3.4 <1.4.0 | 1.4.0 |
Published upstream
Sep 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 14, 2026
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.
Quoted source text, attributed separately from HOL analysis.