Medium
Security advisory
Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a certain situation with IMAP and PREAUTH.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-39272
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:08 UTC · Revision 1
Source evidence
Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a certain situation with IMAP and PREAUTH.
osv:CVE-2021-39272
Complete source record
{
"id": "5c88d95db3449aa54db56003e5cc931837c12980b945b28bc32287b50210485d",
"url": "https://osv.dev/vulnerability/CVE-2021-39272",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-39272",
"summary": "Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a certain situation with IMAP and PREAUTH.",
"evidence": "osv:CVE-2021-39272",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2021-39272",
"aliases": [
"CVE-2021-39272"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://gitlab.com/fetchmail/fetchmail",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "84f2d310e2a3e62c9bb68010a251e1d89a26bc48"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:fetchmail:fetchmail:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "6.4.22"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-39272.json"
}
}
],
"modified": "2026-11-01T02:30:34.030215336Z",
"provider": "osv",
"references": [
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3XJ6XLEJCEZCAM5LGGD6XBCC522QLG4/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VXMKSEHAQSEDCWZMAOJEGX3P3JW6QY6H/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZYCYLL73NP7ALJWSDICIVSA47ZIXWSSA/",
"https://nostarttls.secvuln.info/",
"https://security.gentoo.org/glsa/202209-14",
"https://www.fetchmail.info/security.html"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
"cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "33"
},
{
"last_affected": "33"
},
{
"introduced": "34"
},
{
"last_affected": "34"
},
{
"introduced": "35"
},
{
"last_affected": "35"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2021-39272",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 436930,
"published_at": "2021-08-30T06:15:06.45+00:00"
}