CVE-2026-97027
Flatpak passes through arbitrary vendor-extension keys unmodified when exporting an application's Desktop Entry (.desktop) and D-Bus Service (.service) files, instead of validating against an allowlist. A malicious Flatpak app can use this to cause denial of service (e.g. forced application restart loops) or to influence host D-Bus/systemd activation behavior beyond what the sandbox is intended to permit.
- Published Sep 28, 2026
- CVSS 3.6 low
- 0.1% chance of exploitation in the next 30 days (EPSS)