{"action":"Upgrade firefox-esr to 140.12.0esr-1 or later.","affected":[{"fixed":"140.12.0esr-1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["140.12.0esr-1"],"id":"tcs_01M5NQDYK08V2WWXJZ2GC7Q720","modified_at":"2026-10-27T09:47:29.916779785Z","published_at":"2026-06-16T13:16:30.743Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-12305","https://security-tracker.debian.org/tracker/CVE-2026-12305"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-12305#Debian:14/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-12305"}],"summary":"Memory safety bug fixed in Thunderbird 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12."}