High
Security advisory
A flaw was found in openstack-keystone. Only the first 72 characters of an application secret are verified allowing attackers bypass some password complexity which administrators may be counting on. The highest threat from this vulnerability is to data confidentiality and integrity.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-3563
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:45 UTC · Revision 1
Source evidence
A flaw was found in openstack-keystone. Only the first 72 characters of an application secret are verified allowing attackers bypass some password complexity which administrators may be counting on. The highest threat from this vulnerability is to data confidentiality and integrity.
osv:CVE-2021-3563
Complete source record
{
"id": "2baec67b1b68bc505266b8419db296c67b2f5a94346479a57220de589b194468",
"url": "https://osv.dev/vulnerability/CVE-2021-3563",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-3563",
"summary": "A flaw was found in openstack-keystone. Only the first 72 characters of an application secret are verified allowing attackers bypass some password complexity which administrators may be counting on. The highest threat from this vulnerability is to data confidentiality and integrity.",
"evidence": "osv:CVE-2021-3563",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2021-3563",
"aliases": [
"CVE-2021-3563",
"GHSA-cc99-whm5-mmq3",
"PYSEC-2026-370"
],
"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": [
{
"ranges": [
{
"repo": "https://github.com/openstack/keystone",
"type": "GIT",
"events": [
{
"introduced": "339e7cc798aed24b7697980eb7cf8e20498d436d"
},
{
"last_affected": "847676854572e0c36535048b731f966590adb746"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "10.0"
},
{
"last_affected": "10.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:redhat:openstack_platform:10.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "10.0"
},
{
"last_affected": "10.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "11.0"
},
{
"last_affected": "11.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:redhat:openstack_platform:13.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "13.0"
},
{
"last_affected": "13.0"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"10.0",
"11.0",
"13.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3563.json"
}
}
],
"modified": "2026-10-24T10:30:44.001751126Z",
"provider": "osv",
"references": [
"https://lists.debian.org/debian-lts-announce/2024/01/msg00007.html",
"https://access.redhat.com/security/cve/CVE-2021-3563",
"https://bugs.launchpad.net/ossa/+bug/1901891",
"https://bugzilla.redhat.com/show_bug.cgi?id=1962908",
"https://security-tracker.debian.org/tracker/CVE-2021-3563"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:redhat:openstack_platform:16.1:*:*:*:*:*:*:*",
"cpe:2.3:a:redhat:openstack_platform:16.2:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:openstack_platform",
"extracted_events": [
{
"range": [
{
"introduced": "16.1"
},
{
"last_affected": "16.1"
},
{
"introduced": "16.2"
},
{
"last_affected": "16.2"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2021-3563",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 435769,
"published_at": "2022-08-26T16:15:08.867+00:00"
}