CVE-2026-96276
CRITICAL
NVD
CVSS Score
9.8
Severity
CRITICAL
Published
Sep 23, 2026
Vendor
unknown
Description
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.