High
Security advisory
A vulnerability was discovered in the Keybase Client for Windows before version 5.6.0 when a user executed the "keybase git lfs-config" command on the command-line. In versions prior to 5.6.0, a malicious actor with write access to a user\'s Git repository could leverage this vulnerability to potentially execute arbitrary Windows commands on a user\'s local system.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-34426
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:42 UTC · Revision 1
Source evidence
A vulnerability was discovered in the Keybase Client for Windows before version 5.6.0 when a user executed the "keybase git lfs-config" command on the command-line. In versions prior to 5.6.0, a malicious actor with write access to a user\'s Git repository could leverage this vulnerability to potentially execute arbitrary Windows commands on a user\'s local system.
osv:CVE-2021-34426
Complete source record
{
"id": "dbd8c818cbdc47d1827cc4fa175c18263f3258400868078ff5eb65cdf7256f84",
"url": "https://osv.dev/vulnerability/CVE-2021-34426",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-34426",
"summary": "A vulnerability was discovered in the Keybase Client for Windows before version 5.6.0 when a user executed the \"keybase git lfs-config\" command on the command-line. In versions prior to 5.6.0, a malicious actor with write access to a user\\'s Git repository could leverage this vulnerability to potentially execute arbitrary Windows commands on a user\\'s local system.",
"evidence": "osv:CVE-2021-34426",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2021-34426",
"aliases": [
"CVE-2021-34426"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/keybase/client",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "f50a180af74bd3fd523b409fea747d5c04694f0a"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:keybase:keybase:*:*:*:*:*:*:*:*",
"range": [
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"introduced": "0"
},
{
"fixed": "5.6.0"
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"source": "CPE_RANGE"
}
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}
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"v1.0.0-29b",
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"dummy-build",
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"1.0.0-28",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-34426.json"
}
}
],
"modified": "2026-10-24T10:30:43.418002361Z",
"provider": "osv",
"references": [
"https://explore.zoom.us/en/trust/security/security-bulletin"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2021-34426",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 435617,
"published_at": "2021-12-14T20:15:07.437+00:00"
}