{"action":"Upgrade thunderbird to 1:78.12.0-1 or later.","affected":[{"fixed":"1:78.12.0-1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:78.12.0-1"],"id":"tcs_01M5NFJPNVGS6CD32NGNYM191F","modified_at":"2026-10-23T18:03:12.688069718Z","published_at":"2021-08-05T20:15:08.500Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-29969","https://security-tracker.debian.org/tracker/CVE-2021-29969"],"severity":{"label":"medium","score":5.9},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-29969#Debian:13/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-29969"}],"summary":"If Thunderbird was configured to use STARTTLS for an IMAP connection, and an attacker injected IMAP server responses prior to the completion of the STARTTLS handshake, then Thunderbird didn't ignore t"}