{"action":"Upgrade thunderbird to 1:140.7.1esr-1~deb12u1 or later.","affected":[{"fixed":"1:140.7.1esr-1~deb12u1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1:140.7.1esr-1~deb12u1"],"id":"tcs_01M5NPF7KHA4YCVSWA01GY0TSG","modified_at":"2026-10-01T03:00:47.677347781Z","published_at":"2026-01-28T08:16:03.113Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-0818","https://security-tracker.debian.org/tracker/CVE-2026-0818"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-0818","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-0818"}],"summary":"When a user explicitly requested Thunderbird to decrypt an inline OpenPGP message that was embedded in a text section of an email that was formatted and styled with HTML and CSS, then the decrypted co"}