CVE-2026-96276EPSS p28.9%
CVE-2026-96276CVE-2026-96276
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.
Scoring
| CVSS | 6.5 () |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
| EPSS | 0.37% probability of exploitation · percentile 28.9% · 2026-10-05T12:00:23Z |
| Last modified | 2026-09-27 |