{"action":"Upgrade thunderbird to 1:140.8.0esr-1~deb13u1 or later.","affected":[{"fixed":"1:140.8.0esr-1~deb13u1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:140.8.0esr-1~deb13u1"],"id":"tcs_01M5NRFVQXGFGTCJWQFT83RZ1P","modified_at":"2026-10-01T03:03:09.247267089Z","published_at":"2026-02-24T14:16:26.847Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-2784","https://security-tracker.debian.org/tracker/CVE-2026-2784"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-2784#Debian:13/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-2784"}],"summary":"Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8."}