{"action":"Upgrade thunderbird to 1:140.10.0esr-1 or later.","affected":[{"fixed":"1:140.10.0esr-1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1:140.10.0esr-1"],"id":"tcs_01M5NTPTCFK9TAEM52ZD5ZM5FQ","modified_at":"2026-10-01T03:03:39.027747766Z","published_at":"2026-04-21T13:16:20.720Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-6746","https://security-tracker.debian.org/tracker/CVE-2026-6746"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-6746#Debian:14/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-6746"}],"summary":"Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10."}