{"action":"Upgrade flatpak to 1.8.5-1 or later.","affected":[{"fixed":"1.8.5-1","introduced":"0"}],"component":"flatpak","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1.8.5-1"],"id":"tcs_01M5NFD8Y4PJAXNG1QMWSYEDMS","modified_at":"2026-10-23T18:03:11.660341646Z","published_at":"2021-01-14T20:15:12.360Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-21261","https://security-tracker.debian.org/tracker/CVE-2021-21261"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-21261#Debian:13/flatpak","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-21261"}],"summary":"Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. A bug was discovered in the `flatpak-portal` service that can allow sandboxed applications to execu"}