CVE-2021-3563

keystone: A flaw was found in openstack-keystone

CVE-2021-3563 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2021-3563, released August 26, 2022. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.4
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0186
79th percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
keystone · Debian 13.5 (trixie) 2:23.0.0-3 DEBIAN-CVE-2021-3563 Aug 26, 2022
keystone · Debian 14 2:23.0.0-3 DEBIAN-CVE-2021-3563 Aug 26, 2022
keystone · Ubuntu 22.04.1 LTS (jammy) 2:21.0.1-0ubuntu2.1 keystone 2:21.0.1-0ubuntu2.1 Nov 4, 2025
keystone-common · Ubuntu 22.04.1 LTS (jammy) 2:21.0.1-0ubuntu2.1 keystone-common 2:21.0.1-0ubuntu2.1 Nov 4, 2025
python3-keystone · Ubuntu 22.04.1 LTS (jammy) 2:21.0.1-0ubuntu2.1 python3-keystone 2:21.0.1-0ubuntu2.1 Nov 4, 2025

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