{"action":"Upgrade dovecot to 1:2.4.1+dfsg1-6+deb13u4 or later.","affected":[{"fixed":"1:2.4.1+dfsg1-6+deb13u4","introduced":"0"}],"component":"dovecot","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:2.4.1+dfsg1-6+deb13u4"],"id":"tcs_01M5NRFYKEYMRHCSPPZ46Z8414","modified_at":"2026-10-27T09:47:38.667032427Z","published_at":"2026-03-27T09:16:19.917Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-27857","https://security-tracker.debian.org/tracker/CVE-2026-27857"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-27857#Debian:13/dovecot","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-27857"}],"summary":"Sending \"NOOP (((...)))\" command with 4000 parenthesis open+close results in ~1MB extra memory usage. Longer commands will result in client disconnection. This 1 MB can be left allocated for longer ti"}