{"action":"Upgrade dovecot to 1:2.4.3+dfsg1-1 or later.","affected":[{"fixed":"1:2.4.3+dfsg1-1","introduced":"0"}],"component":"dovecot","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1:2.4.3+dfsg1-1"],"id":"tcs_01M5NRFZBRNSP05T91XDBHVKFJ","modified_at":"2026-10-27T09:47:30.323551828Z","published_at":"2026-03-27T09:16:20.073Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-27858","https://security-tracker.debian.org/tracker/CVE-2026-27858"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-27858#Debian:14/dovecot","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-27858"}],"summary":"Attacker can send a specifically crafted message before authentication that causes managesieve to allocate large amount of memory. Attacker can force managesieve-login to be unavailable by repeatedly"}