{"action":"Upgrade thunderbird to 1:140.15.0esr-1~deb12u1 or later.","affected":[{"fixed":"1:140.15.0esr-1~deb12u1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1:140.15.0esr-1~deb12u1"],"id":"tcs_01M5NVYRQP1DRJHMA5WE4DH0JM","modified_at":"2026-10-06T16:01:43.668968615Z","published_at":"2026-09-01T22:17:19.900Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-84641","https://security-tracker.debian.org/tracker/CVE-2026-84641"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-84641","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-84641"}],"summary":"A malicious IMAP server can trigger use-after-free and heap-memory disclosure by sending a crafted ID response. Heap contents can ultimately be persisted to prefs.js. This vulnerability was fixed in T"}