{"action":"Upgrade thunderbird to 1:60.5.1-1 or later.","affected":[{"fixed":"1:60.5.1-1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1:60.5.1-1"],"id":"tcs_01M5ND7N8DXD8XCDMGTC8M9Q7M","modified_at":"2026-10-23T18:03:03.103194639Z","published_at":"2019-04-26T17:29:00.243Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2018-18509","https://security-tracker.debian.org/tracker/CVE-2018-18509"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2018-18509","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2018-18509"}],"summary":"A flaw during verification of certain S/MIME signatures causes emails to be shown in Thunderbird as having a valid digital signature, even if the shown message contents aren't covered by the signature"}