NIXPKGS-2026-2784

GitHub issue published 10 hours ago

Flatpak: flatpak: path traversal issue in oci archive extraction via hardlinks

Permalink CVE-2026-96279

6.5 MEDIUM

CVSS version (CVSS): 3.1
Attack Vector (AV): Network (N)
Attack Complexity (AC): Low (L)
Privileges Required (PR): None (N)
User Interaction (UI): Required (R)
Scope (S): Unchanged (U)
Confidentiality (C): High (H)
Integrity (I): None (N)
Availability (A): None (N)
Modified Attack Vector (MAV): Network (N)
Modified Attack Complexity (MAC): Low (L)
Modified Privileges Required (MPR): None (N)
Modified User Interaction (MUI): Required (R)
Modified Confidentiality (MC): High (H)
Modified Scope (MS): Unchanged (U)
Modified Integrity (MI): None (N)
Modified Availability (MA): None (N)

updated 10 hours ago by @LeSuisse Activity log

Created suggestion 16 hours ago
@LeSuisse ignored
5 packages
- flatpak-builder
- flatpak-xdg-utils
- flatpak-builder-tools
- kdePackages.flatpak-kcm
- haskellPackages.cabal-flatpak
10 hours ago
@LeSuisse accepted 10 hours ago
@LeSuisse ignored maintainer @getchoo 10 hours ago maintainer.ignore
@LeSuisse published on GitHub 10 hours ago

Flatpak: flatpak: path traversal issue in oci archive extraction via hardlinks

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.