CVE-2026-96279

Description

A malicious OCI registry can hardlink arbitrary host files into the extraction directory when a user installs or updates a Flatpak application from an OCI remote, allowing disclosure of arbitrary host file contents. For system-wide installs running as root, this includes sensitive files such as /etc/shadow.

CVSS Vector

References

• https://access.redhat.com/security/cve/CVE-2026-96279
• https://bugzilla.redhat.com/show_bug.cgi?id=2539417
• https://github.com/flatpak/flatpak/security/advisories/GHSA-9rww-v4mm-x4jg