Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-83x4-9cwr-5487
Advisory ID github_osv/GHSA-83x4-9cwr-5487
Aliases CVE-2021-4133
Summary Improper Authorization in Keycloak A incorrect authorization flaw was found in Keycloak 12.0.0, the flaw allows an attacker with any existing user account to create new default user accounts via the administrative REST API even where new user registration is disabled.
Status Published
Exploitability 0.5
Weighted Severity 7.9
Risk 4.0
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (1)
CWE-863 Incorrect Authorization
System Score Found at
cvssv3.1 8.8 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/01/GHSA-83x4-9cwr-5487/GHSA-83x4-9cwr-5487.json
generic_textual HIGH
Reference id Reference type URL
https://github.com/keycloak/keycloak
https://github.com/keycloak/keycloak/issues/9247
2033602 Bug https://bugzilla.redhat.com/show_bug.cgi?id=2033602
cpuapr2022.html Other https://www.oracle.com/security-alerts/cpuapr2022.html
CVE-2021-4133 https://nvd.nist.gov/vuln/detail/CVE-2021-4133
GHSA-83x4-9cwr-5487 https://github.com/keycloak/keycloak/security/advisories/GHSA-83x4-9cwr-5487
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/01/GHSA-83x4-9cwr-5487/GHSA-83x4-9cwr-5487.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.