{"action":"Upgrade dovecot to 1:2.4.1+dfsg1-6+deb13u7 or later.","affected":[{"fixed":"1:2.4.1+dfsg1-6+deb13u7","introduced":"0"}],"component":"dovecot","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:2.4.1+dfsg1-6+deb13u7"],"id":"tcs_01M5NRX2S661KXSB88246XJSRP","modified_at":"2026-10-31T16:04:23.096047921Z","published_at":"2026-08-28T12:16:28.480Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-40017","https://security-tracker.debian.org/tracker/CVE-2026-40017"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-40017#Debian:13/dovecot","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-40017"}],"summary":"An attacker that can send mail to a user can craft a message header whose values are chosen to collide in an internal hash table, which makes the IMAP THREAD command consume CPU disproportionate to th"}