{"action":"Upgrade thunderbird to 1:140.10.0esr-1~deb12u1 or later.","affected":[{"fixed":"1:140.10.0esr-1~deb12u1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1:140.10.0esr-1~deb12u1"],"id":"tcs_01M5NTQ9CEFB78CVHTB72TSX3C","modified_at":"2026-10-01T03:03:48.487422974Z","published_at":"2026-04-21T13:16:22.927Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-6771","https://security-tracker.debian.org/tracker/CVE-2026-6771"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-6771#Debian:12/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-6771"}],"summary":"Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10."}