CriticalFix available
Red Hat Security Advisory: dovecot security update
Type: advisorySources: OSV
- Products
- dovecot, dovecot-debuginfo, dovecot-debugsource, dovecot-devel, dovecot-mysql, dovecot-mysql-debuginfo, dovecot-pgsql, dovecot-pgsql-debuginfo, dovecot-pigeonhole, dovecot-pigeonhole-debuginfo
- Affected versions
- Not specified
- Fixed versions
- 1:2.3.21-19.el10_2.8
- CVEs
- CVE-2026-27852, CVE-2026-33263, CVE-2026-33605, CVE-2026-40018, CVE-2026-40019, CVE-2026-42007, CVE-2026-42391, CVE-2026-73208
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 12:03 UTC · Revision 1
Source evidence
Red Hat Security Advisory: dovecot security update
core-osv · Original sourcePublished 10 Oct 2026, 10:22 UTC
Red Hat Security Advisory: dovecot security update
osv:RHSA-2026:79371
dovecot
Fixed versions: 1:2.3.21-19.el10_2.8
dovecot-debuginfo
Fixed versions: 1:2.3.21-19.el10_2.8
dovecot-debugsource
Fixed versions: 1:2.3.21-19.el10_2.8
dovecot-mysql
Fixed versions: 1:2.3.21-19.el10_2.8
dovecot-mysql-debuginfo
Fixed versions: 1:2.3.21-19.el10_2.8
dovecot-pgsql
Fixed versions: 1:2.3.21-19.el10_2.8
dovecot-pgsql-debuginfo
Fixed versions: 1:2.3.21-19.el10_2.8
dovecot-pigeonhole
Fixed versions: 1:2.3.21-19.el10_2.8
dovecot-pigeonhole-debuginfo
Fixed versions: 1:2.3.21-19.el10_2.8
dovecot-devel
Fixed versions: 1:2.3.21-19.el10_2.8
Complete source record
{
"id": "1cdd6fde3b38f39a63a7a110a17c29dbaeb1a7aaf22582fc1a5186292580f136",
"url": "https://osv.dev/vulnerability/RHSA-2026%3A79371",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Red Hat Security Advisory: dovecot security update",
"summary": "Red Hat Security Advisory: dovecot security update",
"evidence": "osv:RHSA-2026:79371",
"products": [
{
"name": {
"value": "dovecot",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.3.21-19.el10_2.8",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dovecot-debuginfo",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.3.21-19.el10_2.8",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dovecot-debugsource",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.3.21-19.el10_2.8",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dovecot-mysql",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.3.21-19.el10_2.8",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dovecot-mysql-debuginfo",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.3.21-19.el10_2.8",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dovecot-pgsql",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.3.21-19.el10_2.8",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dovecot-pgsql-debuginfo",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.3.21-19.el10_2.8",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dovecot-pigeonhole",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.3.21-19.el10_2.8",
"evidence": "/affected/7/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dovecot-pigeonhole-debuginfo",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.3.21-19.el10_2.8",
"evidence": "/affected/8/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dovecot-devel",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.3.21-19.el10_2.8",
"evidence": "/affected/9/ranges"
}
],
"affected_versions": []
}
],
"severity": "critical",
"structured": {
"id": "RHSA-2026:79371",
"aliases": [
"RHSA-2026:79371"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.3.21-19.el10_2.8"
}
]
}
],
"package": {
"name": "dovecot",
"purl": "pkg:rpm/redhat/dovecot",
"ecosystem": "Red Hat:enterprise_linux:10.2"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:79371.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.3.21-19.el10_2.8"
}
]
}
],
"package": {
"name": "dovecot-debuginfo",
"purl": "pkg:rpm/redhat/dovecot-debuginfo",
"ecosystem": "Red Hat:enterprise_linux:10.2"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:79371.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.3.21-19.el10_2.8"
}
]
}
],
"package": {
"name": "dovecot-debugsource",
"purl": "pkg:rpm/redhat/dovecot-debugsource",
"ecosystem": "Red Hat:enterprise_linux:10.2"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:79371.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.3.21-19.el10_2.8"
}
]
}
],
"package": {
"name": "dovecot-mysql",
"purl": "pkg:rpm/redhat/dovecot-mysql",
"ecosystem": "Red Hat:enterprise_linux:10.2"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:79371.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.3.21-19.el10_2.8"
}
]
}
],
"package": {
"name": "dovecot-mysql-debuginfo",
"purl": "pkg:rpm/redhat/dovecot-mysql-debuginfo",
"ecosystem": "Red Hat:enterprise_linux:10.2"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:79371.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.3.21-19.el10_2.8"
}
]
}
],
"package": {
"name": "dovecot-pgsql",
"purl": "pkg:rpm/redhat/dovecot-pgsql",
"ecosystem": "Red Hat:enterprise_linux:10.2"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:79371.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.3.21-19.el10_2.8"
}
]
}
],
"package": {
"name": "dovecot-pgsql-debuginfo",
"purl": "pkg:rpm/redhat/dovecot-pgsql-debuginfo",
"ecosystem": "Red Hat:enterprise_linux:10.2"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:79371.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.3.21-19.el10_2.8"
}
]
}
],
"package": {
"name": "dovecot-pigeonhole",
"purl": "pkg:rpm/redhat/dovecot-pigeonhole",
"ecosystem": "Red Hat:enterprise_linux:10.2"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:79371.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.3.21-19.el10_2.8"
}
]
}
],
"package": {
"name": "dovecot-pigeonhole-debuginfo",
"purl": "pkg:rpm/redhat/dovecot-pigeonhole-debuginfo",
"ecosystem": "Red Hat:enterprise_linux:10.2"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:79371.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.3.21-19.el10_2.8"
}
]
}
],
"package": {
"name": "dovecot-devel",
"purl": "pkg:rpm/redhat/dovecot-devel",
"ecosystem": "Red Hat:enterprise_linux:10.2"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:79371.json"
}
}
],
"modified": "2026-10-14T10:31:32Z",
"provider": "osv",
"upstream": [
"CVE-2026-27852",
"CVE-2026-33263",
"CVE-2026-33605",
"CVE-2026-40018",
"CVE-2026-40019",
"CVE-2026-42007",
"CVE-2026-42391",
"CVE-2026-73208"
],
"references": [
"https://access.redhat.com/errata/RHSA-2026:79371",
"https://access.redhat.com/security/updates/classification/#important",
"https://bugzilla.redhat.com/show_bug.cgi?id=2525545",
"https://bugzilla.redhat.com/show_bug.cgi?id=2525547",
"https://bugzilla.redhat.com/show_bug.cgi?id=2525557",
"https://bugzilla.redhat.com/show_bug.cgi?id=2525559",
"https://bugzilla.redhat.com/show_bug.cgi?id=2525567",
"https://bugzilla.redhat.com/show_bug.cgi?id=2525576",
"https://bugzilla.redhat.com/show_bug.cgi?id=2525583",
"https://bugzilla.redhat.com/show_bug.cgi?id=2525584",
"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_79371.json",
"https://access.redhat.com/security/cve/CVE-2026-27852",
"https://www.cve.org/CVERecord?id=CVE-2026-27852",
"https://nvd.nist.gov/vuln/detail/CVE-2026-27852",
"https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0003.json",
"https://access.redhat.com/security/cve/CVE-2026-33263",
"https://www.cve.org/CVERecord?id=CVE-2026-33263",
"https://nvd.nist.gov/vuln/detail/CVE-2026-33263",
"https://access.redhat.com/security/cve/CVE-2026-33605",
"https://www.cve.org/CVERecord?id=CVE-2026-33605",
"https://nvd.nist.gov/vuln/detail/CVE-2026-33605",
"https://access.redhat.com/security/cve/CVE-2026-40018",
"https://www.cve.org/CVERecord?id=CVE-2026-40018",
"https://nvd.nist.gov/vuln/detail/CVE-2026-40018",
"https://access.redhat.com/security/cve/CVE-2026-40019",
"https://www.cve.org/CVERecord?id=CVE-2026-40019",
"https://nvd.nist.gov/vuln/detail/CVE-2026-40019",
"https://access.redhat.com/security/cve/CVE-2026-42007",
"https://www.cve.org/CVERecord?id=CVE-2026-42007",
"https://nvd.nist.gov/vuln/detail/CVE-2026-42007",
"https://access.redhat.com/security/cve/CVE-2026-42391",
"https://www.cve.org/CVERecord?id=CVE-2026-42391",
"https://nvd.nist.gov/vuln/detail/CVE-2026-42391",
"https://access.redhat.com/security/cve/CVE-2026-73208",
"https://www.cve.org/CVERecord?id=CVE-2026-73208",
"https://nvd.nist.gov/vuln/detail/CVE-2026-73208"
]
},
"related_cves": [
{
"value": "CVE-2026-27852",
"evidence": "/upstream"
},
{
"value": "CVE-2026-33263",
"evidence": "/upstream"
},
{
"value": "CVE-2026-33605",
"evidence": "/upstream"
},
{
"value": "CVE-2026-40018",
"evidence": "/upstream"
},
{
"value": "CVE-2026-40019",
"evidence": "/upstream"
},
{
"value": "CVE-2026-42007",
"evidence": "/upstream"
},
{
"value": "CVE-2026-42391",
"evidence": "/upstream"
},
{
"value": "CVE-2026-73208",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 316106,
"published_at": "2026-10-10T10:22:51+00:00"
}