{"action":"Upgrade thunderbird to 1:140.16.0esr-1~deb13u1 or later.","affected":[{"fixed":"1:140.16.0esr-1~deb13u1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:140.16.0esr-1~deb13u1"],"id":"tcs_01M5NWNCEHBM96F342HJQYMT19","modified_at":"2026-10-07T09:47:30.169005173Z","published_at":"2026-09-15T13:16:52.210Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-92021","https://security-tracker.debian.org/tracker/CVE-2026-92021"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-92021#Debian:13/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-92021"}],"summary":"Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox ESR 140.16 and Thunderbird 140.16."}