CVE-2026-97026
LOW
NVD
CVSS Score
3.9
Severity
LOW
Published
Sep 28, 2026
Vendor
unknown
Description
Flatpak creates temporary child repository directories under the user cache with world-writable permissions (0777). On multi-user systems with a permissive umask, other local users could read or modify the temporary directory used while installing apps or runtimes, potentially causing installation failures (denial of service); tampered content would fail signature/digest verification rather than being trusted.