{"action":"Upgrade flatpak to 1.18.1-1 or later.","affected":[{"fixed":"1.18.1-1","introduced":"0"}],"component":"flatpak","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1.18.1-1"],"id":"tcs_01M5NX1G827B7J3TAS2G92HHFF","modified_at":"2026-09-28T09:00:09.282774356Z","published_at":"2026-09-23T15:17:32.317Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-96276","https://security-tracker.debian.org/tracker/CVE-2026-96276"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-96276#Debian:14/flatpak","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-96276"}],"summary":"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"}