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...

CVE-2026-96276

The Flatpak tool is vulnerable to an arbitrary write in the host context via the flatpak build-init --writable-sdk --sdk-extension command. A malicious SDK container can declare an extension point with a crafted directory path containing .. traversal sequences. Because the target path is resolved...

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...