{"action":"Upgrade thunderbird to 1:140.11.0esr-1~deb12u1 or later.","affected":[{"fixed":"1:140.11.0esr-1~deb12u1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1:140.11.0esr-1~deb12u1"],"id":"tcs_01M5NW7HJRZM513Z0TFCKR1FM1","modified_at":"2026-10-15T09:47:39.605334557Z","published_at":"2026-05-19T14:16:51.593Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-8953","https://security-tracker.debian.org/tracker/CVE-2026-8953"],"severity":{"label":"critical","score":9.6},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-8953#Debian:12/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-8953"}],"summary":"Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140."}