{"action":"Upgrade dovecot to 2.4.3-r0 or later.","affected":[{"fixed":"2.4.3-r0","introduced":"0"}],"component":"dovecot","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.24","exploited":false,"fixed_versions":["2.4.3-r0"],"id":"tcs_01M5NFEGWBSGYSQB7V4S8EVZ4H","modified_at":"2026-08-27T22:18:02.994594671Z","published_at":"2026-03-27T09:16:18.620Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2025-59028","https://security.alpinelinux.org/vuln/CVE-2025-59028"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2025-59028#Alpine:v3.24/dovecot","url":"https://osv.dev/vulnerability/ALPINE-CVE-2025-59028"}],"summary":"When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to fail. Invalid BASE64 data can be used to DoS a vulnerable serve"}