CVE-2026-97025

Summary

Flatpak writes the OCI repository authentication token with world-readable permissions (0644) in the system-helper's cache directory, allowing other local users on a multi-user system to read the token and impersonate the authenticated user against the OCI repository. Only OCI-based sources (e.g. as used by Fedora) are affected; libostree-based sources such as Flathub are not.

Affected Software

Weaknesses

• CWE-378: Creation of Temporary File With Insecure Permissions

Workarounds

Use libostree repositories such as Flathub, or unauthenticated (public) OCI repositories.

References

• https://access.redhat.com/security/cve/CVE-2026-97025
• https://bugzilla.redhat.com/show_bug.cgi?id=2542628
• https://github.com/flatpak/flatpak/security/advisories/GHSA-7rvf-rqr3-43j4

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