GHSA-83x4-9cwr-5487

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    GHSA-83x4-9cwr-5487

    Published: 6 Jan 2022Last Modified: 16 Jul 2026
    Aliases:
    CVE-2021-4133

    Summary: Improper Authorization in Keycloak

    Details: 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.

    References: https://github.com/keycloak/keycloak/security/advisories/GHSA-83x4-9cwr-5487, https://nvd.nist.gov/vuln/detail/CVE-2021-4133, https://github.com/keycloak/keycloak/issues/9247, https://bugzilla.redhat.com/show_bug.cgi?id=2033602, https://github.com/keycloak/keycloak, https://www.oracle.com/security-alerts/cpuapr2022.html

    Affected packages

    Package

    Name: org.keycloak:keycloak-services

    Purl: pkg:maven/org.keycloak/keycloak-services

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -15.1.1

    Affected versions

    1.0-alpha-1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    GHSA-83x4-9cwr-5487 | CVE-DB