{"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_01M5NX1H3QAZ0SZK6H918V3ZD2","modified_at":"2026-11-03T09:47:35.729723399Z","published_at":"2026-09-27T21:17:04.200Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-96280","https://security-tracker.debian.org/tracker/CVE-2026-96280"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-96280#Debian:14/flatpak","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-96280"}],"summary":"The OCI delta stream parser read sizes as guint64 but passed them to GLib I/O and allocation functions expecting gsize (32 bits on 32-bit systems), causing undersized allocations while subsequent oper"}