MediumFix available
openssh — security advisory
The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client). NOTE: some reports state that 8.5 and 8.6 are also affected.
- Products
- openssh
- Affected versions
- Not specified
- Fixed versions
- 8.3_p1-r1, 8.4_p1-r0
- CVEs
- CVE-2020-14145
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 12:01 UTC · Revision 1
Source evidence
The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client). NOTE: some reports state that 8.5 and 8.6 are also affected.
osv:ALPINE-CVE-2020-14145
openssh
Fixed versions: 8.3_p1-r1
openssh
Fixed versions: 8.4_p1-r0
openssh
Fixed versions: 8.4_p1-r0
openssh
Fixed versions: 8.4_p1-r0
openssh
Fixed versions: 8.4_p1-r0
openssh
Fixed versions: 8.4_p1-r0
openssh
Fixed versions: 8.4_p1-r0
openssh
Fixed versions: 8.4_p1-r0
openssh
Fixed versions: 8.4_p1-r0
openssh
Fixed versions: 8.4_p1-r0
openssh
Fixed versions: 8.4_p1-r0
openssh
Fixed versions: 8.4_p1-r0
openssh
Fixed versions: 8.4_p1-r0
Complete source record
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"method": "structured",
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"severity": "medium",
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"aliases": [
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"metrics": [
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],
"modified": "2026-10-26T11:17:55.115303546Z",
"provider": "osv",
"upstream": [
"CVE-2020-14145"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2020-14145"
]
},
"related_cves": [
{
"value": "CVE-2020-14145",
"evidence": "/upstream"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 450389,
"published_at": "2020-06-29T18:15:11.94+00:00"
}