{"action":"Upgrade thunderbird to 1:140.8.0esr-1 or later.","affected":[{"fixed":"1:140.8.0esr-1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1:140.8.0esr-1"],"id":"tcs_01M5NR4D3F07BQKY88TKPR5D0E","modified_at":"2026-10-01T03:03:21.658913740Z","published_at":"2026-02-16T15:18:34.740Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-2447","https://security-tracker.debian.org/tracker/CVE-2026-2447"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-2447#Debian:12/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-2447"}],"summary":"Heap buffer overflow in libvpx. This vulnerability was fixed in Firefox 147.0.4, Firefox ESR 140.7.1, Firefox ESR 115.32.1, Thunderbird 140.7.2, and Thunderbird 147.0.2."}