{"action":"Upgrade thunderbird to 1:140.11.0esr-1 or later.","affected":[{"fixed":"1:140.11.0esr-1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1:140.11.0esr-1"],"id":"tcs_01M5NVXKBAWADB2EF3EH0Q7HJ9","modified_at":"2026-10-27T09:47:40.084537200Z","published_at":"2026-05-12T15:16:20.100Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-8401","https://security-tracker.debian.org/tracker/CVE-2026-8401"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-8401#Debian:14/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-8401"}],"summary":"Sandbox escape in the Profile Backup component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11."}