{"action":"Upgrade thunderbird to 1:140.13.0esr-1 or later.","affected":[{"fixed":"1:140.13.0esr-1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1:140.13.0esr-1"],"id":"tcs_01M5NQQ33H761AVEFFDPRHECVD","modified_at":"2026-10-25T09:47:42.774835276Z","published_at":"2026-07-21T13:17:13.260Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-16381","https://security-tracker.debian.org/tracker/CVE-2026-16381"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-16381#Debian:14/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-16381"}],"summary":"Same-origin policy bypass in the Networking: DNS component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13."}