{"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_01M5NVBQ4JTED1Q2QHXGDS7FQ0","modified_at":"2026-10-01T03:03:41.940607605Z","published_at":"2026-08-18T13:17:33.430Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-74962","https://security-tracker.debian.org/tracker/CVE-2026-74962"],"severity":{"label":"high","score":8.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-74962#Debian:14/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-74962"}],"summary":"Site isolation issue in the Networking: Cookies component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153."}