UnratedFix available
dovecot: Fix of 7 CVEs
Type: advisorySources: OSV
- CVE-2026-40018: fail MySQL string escaping and SQL passdb lookups while not connected instead of escaping without the connection charset; SQL userdb lookups and dict-sql updates also fail temporarily while not connected
- Products
- dovecot, dovecot-devel, dovecot-mysql, dovecot-pgsql, dovecot-pigeonhole
- Affected versions
- Not specified
- Fixed versions
- 1:2.3.16-5.el8.tuxcare.els7
- CVEs
- CVE-2026-40018
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 10:58 UTC · Revision 1
Source evidence
- CVE-2026-40018: fail MySQL string escaping and SQL passdb lookups while not connected instead of escaping without the connection charset; SQL userdb lookups and dict-sql updates also fail temporarily while not connected
osv:CLSA-2026-1792237792
dovecot
Fixed versions: 1:2.3.16-5.el8.tuxcare.els7
dovecot-devel
Fixed versions: 1:2.3.16-5.el8.tuxcare.els7
dovecot-mysql
Fixed versions: 1:2.3.16-5.el8.tuxcare.els7
dovecot-pgsql
Fixed versions: 1:2.3.16-5.el8.tuxcare.els7
dovecot-pigeonhole
Fixed versions: 1:2.3.16-5.el8.tuxcare.els7
Complete source record
{
"id": "0d018c978cb20980c47c8d45431ba1f290e9a610ad7f1719a70fea90cb2b96aa",
"url": "https://osv.dev/vulnerability/CLSA-2026-1792237792",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "dovecot: Fix of 7 CVEs",
"summary": "- CVE-2026-40018: fail MySQL string escaping and SQL passdb lookups while not connected instead of escaping without the connection charset; SQL userdb lookups and dict-sql updates also fail temporarily while not connected",
"evidence": "osv:CLSA-2026-1792237792",
"products": [
{
"name": {
"value": "dovecot",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.3.16-5.el8.tuxcare.els7",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dovecot-devel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.3.16-5.el8.tuxcare.els7",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dovecot-mysql",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.3.16-5.el8.tuxcare.els7",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dovecot-pgsql",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.3.16-5.el8.tuxcare.els7",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "dovecot-pigeonhole",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.3.16-5.el8.tuxcare.els7",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1792237792",
"aliases": [
"CLSA-2026-1792237792"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.3.16-5.el8.tuxcare.els7"
}
]
}
],
"package": {
"name": "dovecot",
"purl": "pkg:rpm/tuxcare/dovecot?distro=centos-stream-8",
"ecosystem": "TuxCare:CentOS-Stream:8"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos-stream8els/CLSA-2026-1792237792.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.3.16-5.el8.tuxcare.els7"
}
]
}
],
"package": {
"name": "dovecot-devel",
"purl": "pkg:rpm/tuxcare/dovecot-devel?distro=centos-stream-8",
"ecosystem": "TuxCare:CentOS-Stream:8"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos-stream8els/CLSA-2026-1792237792.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.3.16-5.el8.tuxcare.els7"
}
]
}
],
"package": {
"name": "dovecot-mysql",
"purl": "pkg:rpm/tuxcare/dovecot-mysql?distro=centos-stream-8",
"ecosystem": "TuxCare:CentOS-Stream:8"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos-stream8els/CLSA-2026-1792237792.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.3.16-5.el8.tuxcare.els7"
}
]
}
],
"package": {
"name": "dovecot-pgsql",
"purl": "pkg:rpm/tuxcare/dovecot-pgsql?distro=centos-stream-8",
"ecosystem": "TuxCare:CentOS-Stream:8"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos-stream8els/CLSA-2026-1792237792.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.3.16-5.el8.tuxcare.els7"
}
]
}
],
"package": {
"name": "dovecot-pigeonhole",
"purl": "pkg:rpm/tuxcare/dovecot-pigeonhole?distro=centos-stream-8",
"ecosystem": "TuxCare:CentOS-Stream:8"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos-stream8els/CLSA-2026-1792237792.json"
}
}
],
"modified": "2026-10-26T09:31:38.584556818Z",
"provider": "osv",
"upstream": [
"CVE-2026-40018"
],
"references": [
"https://errata.tuxcare.com/els_os/centos-stream8els/CLSA-2026-1792237792.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-27852",
"https://nvd.nist.gov/vuln/detail/CVE-2026-33263",
"https://nvd.nist.gov/vuln/detail/CVE-2026-33605",
"https://nvd.nist.gov/vuln/detail/CVE-2026-40018",
"https://nvd.nist.gov/vuln/detail/CVE-2026-42007",
"https://nvd.nist.gov/vuln/detail/CVE-2026-42391",
"https://nvd.nist.gov/vuln/detail/CVE-2026-73208"
]
},
"related_cves": [
{
"value": "CVE-2026-40018",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 447958,
"published_at": "2026-10-17T11:50:09+00:00"
}