{"action":"Upgrade thunderbird to 1:140.9.0esr-1 or later.","affected":[{"fixed":"1:140.9.0esr-1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1:140.9.0esr-1"],"id":"tcs_01M5NSF5BSKNBKAHWD1XAJVCTY","modified_at":"2026-10-01T03:02:34.330541760Z","published_at":"2026-03-24T13:16:05.783Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-4698","https://security-tracker.debian.org/tracker/CVE-2026-4698"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-4698#Debian:14/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-4698"}],"summary":"JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9."}