critical · CVSS v3 9.8
CVE-2026-96276
If a malicious SDK container declares an extension point with a crafted `directory` path, and a developer runs `flatpak …
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.
Scores
- Severity
- critical
- CVSS v2
- 7.5
- CVSS v3
- 9.8
- CVSS v4
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- EPSS
- —