{"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_01M5NRXD5E5GGJSWHF2ZXZNYG6","modified_at":"2026-10-01T03:02:39.269817692Z","published_at":"2026-08-28T12:16:28.897Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-40203","https://security-tracker.debian.org/tracker/CVE-2026-40203"],"severity":{"label":"low","score":3.7},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-40203#Debian:14/dovecot","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-40203"}],"summary":"When IMAP compression is enabled, the same compression state is reused across responses in a session, so response sizes depend on both attacker-supplied mail and other mail in the same mailbox. An att"}