{"action":"Upgrade dovecot to 1:2.4.5+dfsg1-1 or later.","affected":[{"fixed":"1:2.4.5+dfsg1-1","introduced":"0"}],"component":"dovecot","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1:2.4.5+dfsg1-1"],"id":"tcs_01M5NRQY8BXFFPPPGEEPQTWQMK","modified_at":"2026-10-31T16:01:47.808254645Z","published_at":"2026-08-28T12:16:27.613Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-33604","https://security-tracker.debian.org/tracker/CVE-2026-33604"],"severity":{"label":"medium","score":5.9},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-33604#Debian:14/dovecot","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-33604"}],"summary":"An attacker that can get Dovecot to relay a message, for example through Sieve redirect or submission relay, can use a crafted line ending in the message body to bypass the outbound protection that pr"}