CVE-2026-107466
Fixed in a distro release EPSS <1%CVSS 6.1
A flaw was found in flatpak-builder. This vulnerability allows an attacker to cause information disclosure by convincing a user or continuous integration (CI) system to process a crafted build manifest. By specifying local file Uniform Resource Identifiers (URIs) within source download definitions, the builder bypasses directory confinement checks. As a result, sensitive host files accessible to the build process can be read and incorporated into the build artifacts.
Products: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | flatpak-builder | no fix |
| Debian 13 | flatpak-builder | no fix |
| Debian 14 | flatpak-builder | 1.4.11-1 |
| Ubuntu 18.04 LTS | flatpak-builder | no fix |
| Ubuntu 20.04 LTS | flatpak-builder | no fix |
| Ubuntu 22.04 LTS | flatpak-builder | no fix |
| Ubuntu 24.04 LTS | flatpak-builder | no fix |
| Ubuntu 26.04 LTS | flatpak-builder | no fix |
| Ubuntu 26.10 | flatpak-builder | no fix |