{"action":"Upgrade firefox-esr to 140.14.0esr-2 or later.","affected":[{"fixed":"140.14.0esr-2","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["140.14.0esr-2"],"id":"tcs_01M5NVBGH31N1SNFZVRKN5GYHV","modified_at":"2026-10-01T03:03:49.960106715Z","published_at":"2026-08-18T13:17:30.983Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-74944","https://security-tracker.debian.org/tracker/CVE-2026-74944"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-74944#Debian:14/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-74944"}],"summary":"Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1."}