{"action":"Upgrade firefox-esr to 140.10.1esr-1~deb12u1 or later.","affected":[{"fixed":"140.10.1esr-1~deb12u1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["140.10.1esr-1~deb12u1"],"id":"tcs_01M5NV47EKN8G45E2EGXA1JCWN","modified_at":"2026-10-27T09:47:40.178860667Z","published_at":"2026-04-28T15:16:37.550Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-7321","https://security-tracker.debian.org/tracker/CVE-2026-7321"],"severity":{"label":"critical","score":9.6},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-7321","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-7321"}],"summary":"Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150, Thunderbird 150, Firefox ESR 140.10.1, and Thunderbird 140.10.1."}