High
Security advisory
A flaw was found in rsync in versions since 3.2.0pre1. Rsync improperly validates certificate with host mismatch vulnerability. A remote, unauthenticated attacker could exploit the flaw by performing a man-in-the-middle attack using a valid certificate for another hostname which could compromise confidentiality and integrity of data transmitted using rsync-ssl. The highest threat from this vulnerability is to data confidentiality and integrity. This flaw affects rsync versions before 3.2.4.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-14387
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:38 UTC · Revision 1
Source evidence
A flaw was found in rsync in versions since 3.2.0pre1. Rsync improperly validates certificate with host mismatch vulnerability. A remote, unauthenticated attacker could exploit the flaw by performing a man-in-the-middle attack using a valid certificate for another hostname which could compromise confidentiality and integrity of data transmitted using rsync-ssl. The highest threat from this vulnerability is to data confidentiality and integrity. This flaw affects rsync versions before 3.2.4.
osv:CVE-2020-14387
Complete source record
{
"id": "53e4a31ab4f566a058b7745338ae009b0d2315cb5c01598fddf08515861d4178",
"url": "https://osv.dev/vulnerability/CVE-2020-14387",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-14387",
"summary": "A flaw was found in rsync in versions since 3.2.0pre1. Rsync improperly validates certificate with host mismatch vulnerability. A remote, unauthenticated attacker could exploit the flaw by performing a man-in-the-middle attack using a valid certificate for another hostname which could compromise confidentiality and integrity of data transmitted using rsync-ssl. The highest threat from this vulnerability is to data confidentiality and integrity. This flaw affects rsync versions before 3.2.4.",
"evidence": "osv:CVE-2020-14387",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2020-14387",
"aliases": [
"CVE-2020-14387"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"
}
],
"affected": [
{
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{
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{
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{
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{
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{
"cpe": "cpe:2.3:a:samba:rsync:3.2.0:pre2:*:*:*:*:*:*",
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"source": "CPE_STRING"
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{
"cpe": "cpe:2.3:a:samba:rsync:3.2.0:pre3:*:*:*:*:*:*",
"range": [
{
"introduced": "3.2.0-pre3"
},
{
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"source": "CPE_STRING"
}
]
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}
],
"versions": [
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"v3.2.4pre2",
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"v3.2.3",
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"v3.2.2",
"v3.2.2pre3",
"v3.2.2pre2",
"v3.2.2pre1",
"v3.2.1"
],
"database_specific": {
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}
},
{
"ranges": [
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"type": "GIT",
"events": [
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{
"fixed": "0ac7ebceef70417355f25daf9e2fd94e84c49749"
},
{
"introduced": "c225330aaf9d6032a79317bda1bf669e90ac7212"
},
{
"last_affected": "0b2d5fe4940211ba25a89f18a9889b9ab55d38ef"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:samba:rsync:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.2.1"
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{
"fixed": "3.2.4"
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],
"source": "CPE_RANGE"
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{
"cpe": "cpe:2.3:a:samba:rsync:3.2.0:-:*:*:*:*:*:*",
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],
"source": "CPE_STRING"
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{
"cpe": "cpe:2.3:a:samba:rsync:3.2.0:pre1:*:*:*:*:*:*",
"range": [
{
"introduced": "3.2.0-pre1"
},
{
"last_affected": "3.2.0-pre1"
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],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:rsync:3.2.0:pre2:*:*:*:*:*:*",
"range": [
{
"introduced": "3.2.0-pre2"
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{
"last_affected": "3.2.0-pre2"
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],
"source": "CPE_STRING"
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{
"cpe": "cpe:2.3:a:samba:rsync:3.2.0:pre3:*:*:*:*:*:*",
"range": [
{
"introduced": "3.2.0-pre3"
},
{
"last_affected": "3.2.0-pre3"
}
],
"source": "CPE_STRING"
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]
}
}
],
"versions": [
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"3.2.0-pre1",
"3.2.0-pre2",
"3.2.0-pre3",
"v3.2.4pre4",
"v3.2.4pre3",
"v3.2.4pre2",
"v3.2.4pre1",
"v3.2.3",
"v3.2.3pre1",
"v3.2.2",
"v3.2.2pre3",
"v3.2.2pre2",
"v3.2.2pre1",
"v3.2.1"
],
"database_specific": {
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},
{
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"introduced": "3.2.1"
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{
"fixed": "3.2.4"
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{
"cpe": "cpe:2.3:a:samba:rsync:3.2.0:-:*:*:*:*:*:*",
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{
"cpe": "cpe:2.3:a:samba:rsync:3.2.0:pre1:*:*:*:*:*:*",
"range": [
{
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},
{
"last_affected": "3.2.0-pre1"
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],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:rsync:3.2.0:pre2:*:*:*:*:*:*",
"range": [
{
"introduced": "3.2.0-pre2"
},
{
"last_affected": "3.2.0-pre2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:rsync:3.2.0:pre3:*:*:*:*:*:*",
"range": [
{
"introduced": "3.2.0-pre3"
},
{
"last_affected": "3.2.0-pre3"
}
],
"source": "CPE_STRING"
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}
],
"versions": [
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"3.2.0-pre1",
"3.2.0-pre2",
"3.2.0-pre3",
"v3.2.4pre4",
"v3.2.4pre3",
"v3.2.4pre2",
"v3.2.4pre1",
"v3.2.3",
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"database_specific": {
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}
}
],
"modified": "2026-10-24T10:30:56.065852440Z",
"provider": "osv",
"references": [
"https://bugzilla.redhat.com/show_bug.cgi?id=1875549"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2020-14387",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 438577,
"published_at": "2021-05-27T20:15:07.873+00:00"
}