CVE-2026-96279
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|
Weaknesses
- CWE-59: Improper Link Resolution Before File Access ('Link Following')
Workarounds
Only install applications from trusted OCI registries. Flatpak remotes using the default OSTree transport are not affected.
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
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