Is CVE-2026-97026 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-97026?

CVE-2026-97026 has a CVSS v3 severity of LOW (3.9).

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CVE-2026-97026

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.