{"id":"ALSA-2026:13830","summary":"Important: dovecot security update","details":"Dovecot is an IMAP server for Linux and other UNIX-like systems, written primarily with security in mind. It also contains a small POP3 server, and supports e-mail in either the maildir or mbox format. The SQL drivers and authentication plug-ins are provided as subpackages.   \n\nSecurity Fix(es):  \n\n  * dovecot: ManageSieve: Denial of Service via crafted SASL initial response in AUTHENTICATE command (CVE-2025-59032)\n  * dovecot: denial of service via crafted message before authentication (CVE-2026-27858)\n  * dovecot: denial of service via specially crafted NOOP command (CVE-2026-27857)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","modified":"2026-05-06T07:44:16.529257433Z","published":"2026-05-05T00:00:00Z","related":["CVE-2025-59032","CVE-2026-27857","CVE-2026-27858"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:13830"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2025-59032"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-27857"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-27858"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2452172"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2452175"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2452179"},{"type":"ADVISORY","url":"https://errata.almalinux.org/8/ALSA-2026-13830.html"}],"affected":[{"package":{"name":"dovecot","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/dovecot"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.3.16-7.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:13830.json"}},{"package":{"name":"dovecot-devel","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/dovecot-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.3.16-7.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:13830.json"}},{"package":{"name":"dovecot-mysql","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/dovecot-mysql"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.3.16-7.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:13830.json"}},{"package":{"name":"dovecot-pgsql","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/dovecot-pgsql"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.3.16-7.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:13830.json"}},{"package":{"name":"dovecot-pigeonhole","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/dovecot-pigeonhole"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.3.16-7.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:13830.json"}}],"schema_version":"1.7.5"}