{"action":"Upgrade thunderbird to 1:140.10.0esr-1~deb13u1 or later.","affected":[{"fixed":"1:140.10.0esr-1~deb13u1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:140.10.0esr-1~deb13u1"],"id":"tcs_01M5NTQ06TD5ZJFGPCD7R90D0N","modified_at":"2026-10-26T11:47:30.730475947Z","published_at":"2026-04-21T13:16:21.420Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-6754","https://security-tracker.debian.org/tracker/CVE-2026-6754"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-6754#Debian:13/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-6754"}],"summary":"Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10."}