{"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_01M5NW7VESC8ASZZZXN0JB70GR","modified_at":"2026-10-15T09:47:44.706064892Z","published_at":"2026-05-19T14:16:51.820Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-8955","https://security-tracker.debian.org/tracker/CVE-2026-8955"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-8955#Debian:12/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-8955"}],"summary":"Privilege escalation in the DOM: Workers component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11."}