{"action":"Upgrade dovecot to 2.4.4-r0 or later.","affected":[{"fixed":"2.4.4-r0","introduced":"0"}],"component":"dovecot","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.23","exploited":false,"fixed_versions":["2.4.4-r0"],"id":"tcs_01M5NFNR822XS7MHJHP86X8TED","modified_at":"2026-10-01T02:17:49.248217281Z","published_at":"2026-05-12T14:17:01.600Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2026-33603","https://security.alpinelinux.org/vuln/CVE-2026-33603"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2026-33603","url":"https://osv.dev/vulnerability/ALPINE-CVE-2026-33603"}],"summary":"Attacker can use a specially crafted base64 exchange between Dovecot and Client to fake SCRAM TLS channel binding. This requires that the attacker is able to position itself between Dovecot and the cl"}