{"action":"Upgrade dovecot to 1:2.2.27-3 or later.","affected":[{"fixed":"1:2.2.27-3","introduced":"0"}],"component":"dovecot","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:2.2.27-3"],"id":"tcs_01M5NCD1KSAHC7VHS308M6T8T2","modified_at":"2026-09-01T20:03:47.827443844Z","published_at":"2018-06-21T13:29:00.317Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2017-2669","https://security-tracker.debian.org/tracker/CVE-2017-2669"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2017-2669#Debian:13/dovecot","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2017-2669"}],"summary":"Dovecot before version 2.2.29 is vulnerable to a denial of service. When 'dict' passdb and userdb were used for user authentication, the username sent by the IMAP/POP3 client was sent through var_expa"}