CVE-2026-97027

low

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.

References

https://github.com/flatpak/flatpak/security/advisories/GHSA-v64f-hrwr-j4vh

https://bugzilla.redhat.com/show_bug.cgi?id=2542683

https://access.redhat.com/security/cve/CVE-2026-97027

Details

Source: Mitre, NVD

Published: 2026-09-28

Updated: 2026-09-29

Risk Information

CVSS v2

Base Score: 2.1

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P

Severity: Low

CVSS v3

Base Score: 3.6

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:L

Severity: Low

EPSS

EPSS: 0.00128