{"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_01M5NRFZJ15M7WRDR6AES9DX5B","modified_at":"2026-10-26T11:47:30.019979571Z","published_at":"2026-03-27T09:16:20.223Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-27859","https://security-tracker.debian.org/tracker/CVE-2026-27859"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-27859#Debian:13/dovecot","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-27859"}],"summary":"A mail message containing excessive amount of RFC 2231 MIME parameters causes LMTP to use too much CPU. A suitably formatted mail message causes mail delivery process to consume large amounts of CPU t"}