{"action":"Upgrade thunderbird to 1:52.9.0-1 or later.","affected":[{"fixed":"1:52.9.0-1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1:52.9.0-1"],"id":"tcs_01M5NCZRJMT7VHVD8ARG9FS1TY","modified_at":"2026-10-23T18:02:58.516030534Z","published_at":"2018-10-18T13:29:04.103Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2018-12373","https://security-tracker.debian.org/tracker/CVE-2018-12373"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2018-12373#Debian:14/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2018-12373"}],"summary":"dDecrypted S/MIME parts hidden with CSS or the plaintext HTML tag can leak plaintext when included in a HTML reply/forward. This vulnerability affects Thunderbird < 52.9."}