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OpenAdvisories
Low · 2.5 CVE-2026-96284 EUVD-2026-88046

Flatpak: flatpak: arbitrary read-access to files in the system-helper context via oci symlink following

Published Sep 27, 2026 · Updated Nov 6, 2026 · Assigned by redhat

Description

A malicious user can get read-access to files in the flatpak-system-helper context if a system OCI repository is configured, because the OCI code paths in the system helper follow symlinks when importing OCI images that are under the user's control.

Affected products

VendorProductAffectedFixed
Red Hat Red Hat Enterprise Linux 10 — —
Red Hat Red Hat Enterprise Linux 7 — —
Red Hat Red Hat Enterprise Linux 8 — —
Red Hat Red Hat Enterprise Linux 9 — —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 flatpak 1.16.4-1 —
Debian 13 flatpak 1.16.6-1~deb13u1 —
Debian 12 flatpak 1.14.10-1~deb12u2 —
ReleasePackageFixed inAdvisory
Ubuntu Pro 24.04 LTS flatpak No fix yet —
Ubuntu Pro 22.04 LTS flatpak No fix yet —
Ubuntu Pro 20.04 LTS flatpak No fix yet —
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 18.04 LTS flatpak No fix yet —

References