This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-96276 →

DEBIAN-CVE-2026-96276

If a malicious SDK container declares an extension point with a crafted `directory` path, and a developer runs `flatpak build-init --writable-sdk --sd...

Original description

The description as published by the source.

If a malicious SDK container declares an extension point with a crafted directory path, and a developer runs flatpak build-init --writable-sdk --sdk-extension with that SDK, attacker-chosen files could be written outside the working directory, since the target path is resolved via a function that allows .. traversal.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 flatpak

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 flatpak

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16.6-1~deb13u2"}]}]

Debian:14 flatpak

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.1-1"}]}]

References

advisory security-tracker.debian.org