{"action":"Upgrade firefox-esr to 153.4.0esr-1~deb13u1 or later.","affected":[{"fixed":"153.4.0esr-1~deb13u1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["153.4.0esr-1~deb13u1"],"id":"tcs_01M5NPHDGGW828AVB3RGPVPY1S","modified_at":"2026-10-06T16:01:37.158891686Z","published_at":"2026-09-29T13:17:43.583Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-100786","https://security-tracker.debian.org/tracker/CVE-2026-100786"],"severity":{"label":"critical","score":9.6},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-100786#Debian:13/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-100786"}],"summary":"Sandbox escape due to use-after-free in the Graphics component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115."}