{"action":"Upgrade thunderbird to 1:140.14.0esr-1~deb12u1 or later.","affected":[{"fixed":"1:140.14.0esr-1~deb12u1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1:140.14.0esr-1~deb12u1"],"id":"tcs_01M5NVBZ9RF4X7M1GA66ABWCF0","modified_at":"2026-10-01T03:03:41.955922030Z","published_at":"2026-08-18T13:17:39.077Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-74983","https://security-tracker.debian.org/tracker/CVE-2026-74983"],"severity":{"label":"high","score":8.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-74983#Debian:12/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-74983"}],"summary":"Mitigation bypass in the Data Loss Prevention component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1."}