{"id":"CVE-2026-97027","published":"2026-09-28T21:17:20.067","lastModified":"2026-09-29T21:29:07.663","description":"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.","cvssScore":3.6,"cvssSeverity":"LOW","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:L","cwes":["CWE-20"],"vendors":[],"products":[],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-97027","tags":[]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2542683","tags":[]},{"url":"https://github.com/flatpak/flatpak/security/advisories/GHSA-v64f-hrwr-j4vh","tags":[]}],"exploitRefs":[{"url":"https://github.com/flatpak/flatpak/security/advisories/GHSA-v64f-hrwr-j4vh","tags":[]}],"hasPoc":true,"ai":null}