High
Security advisory
Nextcloud server is an open source, self hosted personal cloud. In affected versions an attacker is able to bypass Two Factor Authentication in Nextcloud. Thus knowledge of a password, or access to a WebAuthN trusted device of a user was sufficient to gain access to an account. It is recommended that the Nextcloud Server is upgraded to 20.0.12, 21.0.4 or 22.1.0. There are no workaround for this vulnerability.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-32800
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 11:47 UTC · Revision 1
Source evidence
Nextcloud server is an open source, self hosted personal cloud. In affected versions an attacker is able to bypass Two Factor Authentication in Nextcloud. Thus knowledge of a password, or access to a WebAuthN trusted device of a user was sufficient to gain access to an account. It is recommended that the Nextcloud Server is upgraded to 20.0.12, 21.0.4 or 22.1.0. There are no workaround for this vulnerability.
osv:CVE-2021-32800
Complete source record
{
"id": "8867a051239de438d5206009445c7989a00aa4626ea510506c59b71c21d7eff3",
"url": "https://osv.dev/vulnerability/CVE-2021-32800",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-32800",
"summary": "Nextcloud server is an open source, self hosted personal cloud. In affected versions an attacker is able to bypass Two Factor Authentication in Nextcloud. Thus knowledge of a password, or access to a WebAuthN trusted device of a user was sufficient to gain access to an account. It is recommended that the Nextcloud Server is upgraded to 20.0.12, 21.0.4 or 22.1.0. There are no workaround for this vulnerability.",
"evidence": "osv:CVE-2021-32800",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2021-32800",
"aliases": [
"CVE-2021-32800",
"GHSA-gv5w-8q25-785v"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/nextcloud/server",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "a09a7fc6ae1c18aeba4fef5775a670aea8003890"
},
{
"introduced": "8985b7930653139859002eb3eca2852999ed8f0d"
},
{
"fixed": "c52fea0b16690b492f6c4175e1ae71d488936244"
},
{
"introduced": "c67e1420c8f741bfa43db08fcc295ec3b156fff8"
},
{
"fixed": "a45d94af7b5480c695da9f3fdc775d9afa7decfa"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "20.0.12"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "21.0.0"
},
{
"fixed": "21.0.4"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "22.0.0"
},
{
"fixed": "22.1.0"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
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"v22.1.0rc1",
"v21.0.4rc1",
"v22.0.0",
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"v18.0.0RC1",
"v18.0.0beta4",
"v18.0.0beta3",
"v18.0.0beta2",
"v18.0.0beta1",
"v17.0.0beta4",
"v17.0.0beta3",
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"v8.0.0alpha2",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-32800.json"
}
}
],
"modified": "2026-10-20T10:54:43.163600599Z",
"provider": "osv",
"references": [
"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-gv5w-8q25-785v",
"https://security.gentoo.org/glsa/202208-17",
"https://hackerone.com/reports/1271052",
"https://github.com/nextcloud/server/pull/28078"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2021-32800",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 385986,
"published_at": "2021-09-07T22:15:08.417+00:00"
}