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 --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.

Referanslar

• https://access.redhat.com/security/cve/CVE-2026-96276
• https://bugzilla.redhat.com/show_bug.cgi?id=2539418
• https://github.com/flatpak/flatpak/security/advisories/GHSA-8qxj-x646-phcm