Low
Security advisory
Nextcloud Server is a Nextcloud package that handles data storage. Nextcloud Server versions prior to 19.0.11, 20.0.10, or 21.0.2 send user IDs to the lookup server even if the user has no fields set to published. The vulnerability is patched in versions 19.0.11, 20.0.10, and 21.0.2; no workarounds outside the updates are known to exist.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-32653
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 04:22 UTC · Revision 1
Source evidence
Nextcloud Server is a Nextcloud package that handles data storage. Nextcloud Server versions prior to 19.0.11, 20.0.10, or 21.0.2 send user IDs to the lookup server even if the user has no fields set to published. The vulnerability is patched in versions 19.0.11, 20.0.10, and 21.0.2; no workarounds outside the updates are known to exist.
osv:CVE-2021-32653
Complete source record
{
"id": "06e383fd7bbf745e797cd529822672b5097d68272be56d75e0abf6fb93ebcf03",
"url": "https://osv.dev/vulnerability/CVE-2021-32653",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-32653",
"summary": "Nextcloud Server is a Nextcloud package that handles data storage. Nextcloud Server versions prior to 19.0.11, 20.0.10, or 21.0.2 send user IDs to the lookup server even if the user has no fields set to published. The vulnerability is patched in versions 19.0.11, 20.0.10, and 21.0.2; no workarounds outside the updates are known to exist.",
"evidence": "osv:CVE-2021-32653",
"products": [],
"severity": "low",
"structured": {
"id": "CVE-2021-32653",
"aliases": [
"CVE-2021-32653",
"GHSA-396j-vqpr-qg45"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/nextcloud/server",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "ea6649a511ec5963b984342a50103c3637d621a3"
},
{
"introduced": "615b994816710a595243d704c9be445f736b4b41"
},
{
"fixed": "6e537422555592ba6542780533963a67fff68cf1"
},
{
"introduced": "8985b7930653139859002eb3eca2852999ed8f0d"
},
{
"fixed": "59752ce269dfb122ef9e3ae56c33464551aa74e1"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "19.0.11"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "20.0.0"
},
{
"fixed": "20.0.10"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "21.0.0"
},
{
"fixed": "21.0.2"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v19.0.11RC1",
"v20.0.10RC1",
"v21.0.2RC1",
"v19.0.10",
"v20.0.9",
"v21.0.1",
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"v21.0.1RC1",
"v20.0.9RC1",
"v19.0.9",
"v20.0.8",
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"v20.0.8RC1",
"v20.0.7RC1",
"v20.0.7",
"v19.0.8",
"v20.0.6",
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"v20.0.6RC1",
"v19.0.7",
"v20.0.5",
"v20.0.5RC2",
"v19.0.7RC1",
"v20.0.5RC1",
"v20.0.4",
"v19.0.6",
"v20.0.3",
"v19.0.6RC2",
"v20.0.3RC2",
"v19.0.5",
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"v20.0.2RC2",
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"v19.0.2",
"v19.0.2RC2",
"v19.0.2RC1",
"v19.0.1",
"v19.0.1RC1",
"v19.0.0",
"v19.0.0RC3",
"v19.0.0RC1",
"v19.0.0beta7",
"v19.0.0beta6",
"v19.0.0beta5",
"v19.0.0beta4",
"v19.0.0beta3",
"v19.0.0beta2",
"v19.0.0beta1",
"v18.0.0RC1",
"v18.0.0beta4",
"v18.0.0beta3",
"v18.0.0beta2",
"v18.0.0beta1",
"v17.0.0beta4",
"v17.0.0beta3",
"v17.0.0beta2",
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"v16.0.0RC1",
"v16.0.0beta3",
"v16.0.0beta2",
"v16.0.0beta1",
"v16.0.0alpha1",
"v15.0.0RC1",
"v15.0.0beta2",
"v15.0.0beta1",
"v14.0.0RC2",
"v14.0.0RC1",
"v14.0.0beta4",
"v14.0.0beta3",
"v14.0.0beta2",
"v14.0.0beta1",
"v13.0.0RC1",
"v13.0.0beta4",
"v13.0.0beta3",
"v13.0.0beta2",
"v13.0.0beta1",
"v12.0.0beta4",
"v12.0.0beta3",
"v12.0.0beta2",
"v12.0.0beta1",
"v11.0.0",
"v11.0RC2",
"v9.1.0beta1",
"v9.0.0beta2",
"v9.0beta1",
"v8.2RC1",
"v8.2beta1",
"v8.1RC2",
"v8.1.0beta2",
"v8.1.0beta1",
"v8.1.0alpha2",
"v8.1.0alpha1",
"v8.0.0",
"v8.0.0RC2",
"v8.0.0RC1",
"v8.0.0beta2",
"v8.0.0beta1",
"v8.0.0alpha2",
"v8.0.0alpha1",
"v7.0.0beta1",
"v7.0.0alpha2",
"v6.0.0RC2",
"v6.0.0RC1",
"v6.0.0beta5",
"v6.0.0beta4",
"v6.0.0beta3",
"v6.0.0beta2",
"v6.0.0alpha2",
"v5.0.0",
"v5.0.0RC3",
"v5.0.0RC2",
"v5.0.0RC1",
"v5.0.0beta2",
"v5.0.0beta1",
"v5.0.0alpha1",
"v4.5.0",
"v4.5.0RC3",
"v4.5.0RC2",
"v4.5.0RC1",
"v4.5.0beta4",
"v4.5.0beta3",
"v4.0.6",
"v4.0.5",
"v4.0.4",
"v4.0.1",
"v4.0.0",
"v4.0.0RC2",
"v4.0.0RC",
"v4.0.0beta",
"v3.0",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-32653.json"
}
}
],
"modified": "2026-10-24T10:30:18.117816546Z",
"provider": "osv",
"references": [
"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-396j-vqpr-qg45",
"https://security.gentoo.org/glsa/202208-17",
"https://hackerone.com/reports/1173436"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2021-32653",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 429699,
"published_at": "2021-06-01T20:15:08.517+00:00"
}