{"action":"Upgrade dovecot to 2.4.5-r0 or later.","affected":[{"fixed":"2.4.5-r0","introduced":"0"}],"component":"dovecot","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.23","exploited":false,"fixed_versions":["2.4.5-r0"],"id":"tcs_01M5NFQ1EXV401MBASH0JTVC5C","modified_at":"2026-10-01T02:17:49.273949804Z","published_at":"2026-08-28T12:16:28.480Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2026-40017","https://security.alpinelinux.org/vuln/CVE-2026-40017"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2026-40017","url":"https://osv.dev/vulnerability/ALPINE-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"}