{"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_01M5NX28G2NGM71NGFAZZKK1EM","modified_at":"2026-09-25T08:47:33.306110520Z","published_at":"2026-09-23T17:17:25.860Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-96808","https://security-tracker.debian.org/tracker/CVE-2026-96808"],"severity":{"label":"high","score":7.4},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-96808#Debian:14/flatpak","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-96808"}],"summary":"In Flatpak before 1.18.1, the revokefs writer, used by the flatpak-system-helper to receive repository data from unprivileged callers, validated file paths by rejecting literal .. components but did n"}