{"action":"Upgrade thunderbird to 1:140.7.0esr-1~deb13u1 or later.","affected":[{"fixed":"1:140.7.0esr-1~deb13u1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:140.7.0esr-1~deb13u1"],"id":"tcs_01M5NPFEEYJJ65Z97RXTYAPD21","modified_at":"2026-10-01T03:00:18.590644536Z","published_at":"2026-01-13T14:16:38.463Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-0879","https://security-tracker.debian.org/tracker/CVE-2026-0879"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-0879#Debian:13/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-0879"}],"summary":"Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140."}