{"action":"Upgrade thunderbird to 1:140.15.0esr-1~deb13u1 or later.","affected":[{"fixed":"1:140.15.0esr-1~deb13u1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:140.15.0esr-1~deb13u1"],"id":"tcs_01M5NVCPA4XWNB495FY0VJS61E","modified_at":"2026-10-06T16:01:08.866223510Z","published_at":"2026-08-18T13:17:43.500Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-75874","https://security-tracker.debian.org/tracker/CVE-2026-75874"],"severity":{"label":"critical","score":10},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-75874#Debian:13/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-75874"}],"summary":"Sandbox escape in the Remote Settings Client component. This vulnerability was fixed in Firefox 154, Thunderbird 154, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 140.15, and"}