{"id":"CVE-2020-12397","details":"By encoding Unicode whitespace characters within the From email header, an attacker can spoof the sender email address that Thunderbird displays. This vulnerability affects Thunderbird \u003c 68.8.0.","modified":"2026-03-15T14:36:55.550546Z","published":"2020-05-22T19:15:15.580Z","related":["MGASA-2020-0209","SUSE-SU-2020:1225-1","openSUSE-SU-2020:0643-1","openSUSE-SU-2024:10601-1"],"references":[{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202005-03"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4373-1/"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2020-18/"},{"type":"FIX","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1617370"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-12397.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"68.8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"16.04"}]},{"events":[{"introduced":"0"},{"last_affected":"18.04"}]},{"events":[{"introduced":"0"},{"last_affected":"19.10"}]},{"events":[{"introduced":"0"},{"last_affected":"20.04"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N"}]}