{"action":"Upgrade thunderbird to 1:140.4.0esr-1~deb12u1 or later.","affected":[{"fixed":"1:140.4.0esr-1~deb12u1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1:140.4.0esr-1~deb12u1"],"id":"tcs_01M5NMVXG88BAXCPWE6EXQ58QA","modified_at":"2026-10-24T09:47:34.190601360Z","published_at":"2025-10-14T13:15:37.330Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-11711","https://security-tracker.debian.org/tracker/CVE-2025-11711"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-11711#Debian:12/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-11711"}],"summary":"There was a way to change the value of JavaScript Object properties that were supposed to be non-writeable. This vulnerability was fixed in Firefox 144, Firefox ESR 115.29, Firefox ESR 140.4, Thunderb"}