{"action":"Upgrade firefox-esr to 153.4.0esr-1 or later.","affected":[{"fixed":"153.4.0esr-1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["153.4.0esr-1"],"id":"tcs_01M5NPGVJ2MJMHY882EJSXV7QA","modified_at":"2026-10-14T09:47:49.452507169Z","published_at":"2026-09-29T13:17:40.047Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-100757","https://security-tracker.debian.org/tracker/CVE-2026-100757"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-100757#Debian:14/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-100757"}],"summary":"Use-after-free in the Widget component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140."}