MediumFix available
ksmtp — security advisory
In KDE KMail 19.12.3 (aka 5.13.3), the SMTP STARTTLS option is not honored (and cleartext messages are sent) unless "Server requires authentication" is checked.
- Products
- ksmtp
- Affected versions
- Not specified
- Fixed versions
- 21.12.3-2
- CVEs
- CVE-2021-38373
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 00:39 UTC · Revision 1
Source evidence
In KDE KMail 19.12.3 (aka 5.13.3), the SMTP STARTTLS option is not honored (and cleartext messages are sent) unless "Server requires authentication" is checked.
osv:DEBIAN-CVE-2021-38373
ksmtp
Fixed versions: 21.12.3-2
ksmtp
Fixed versions: 21.12.3-2
ksmtp
Fixed versions: 21.12.3-2
Complete source record
{
"id": "096ef5ccf7d3eaf016d2936a516a3b3e82513e3636431d87e08ea7b4181c350c",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2021-38373",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2021-38373",
"summary": "In KDE KMail 19.12.3 (aka 5.13.3), the SMTP STARTTLS option is not honored (and cleartext messages are sent) unless \"Server requires authentication\" is checked.",
"evidence": "osv:DEBIAN-CVE-2021-38373",
"products": [
{
"name": {
"value": "ksmtp",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "21.12.3-2",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "ksmtp",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "21.12.3-2",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "ksmtp",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "21.12.3-2",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2021-38373",
"aliases": [
"DEBIAN-CVE-2021-38373"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "21.12.3-2"
}
]
}
],
"package": {
"name": "ksmtp",
"purl": "pkg:deb/debian/ksmtp?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-38373.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "21.12.3-2"
}
]
}
],
"package": {
"name": "ksmtp",
"purl": "pkg:deb/debian/ksmtp?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-38373.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "21.12.3-2"
}
]
}
],
"package": {
"name": "ksmtp",
"purl": "pkg:deb/debian/ksmtp?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-38373.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T18:03:31.892534485Z",
"provider": "osv",
"upstream": [
"CVE-2021-38373"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2021-38373"
]
},
"related_cves": [
{
"value": "CVE-2021-38373",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 421812,
"published_at": "2021-08-10T15:15:08.39+00:00"
}