Detections
Analytics

CVE-2021-4133

high

Description

A flaw was found in Keycloak in versions from 12.0.0 and before 15.1.1 which allows an attacker with any existing user account to create new default user accounts via the administrative REST API even when new user registration is disabled.

References

https://github.com/keycloak/keycloak/security/advisories/GHSA-83x4-9cwr-5487

https://github.com/keycloak/keycloak/issues/9247

https://bugzilla.redhat.com/show_bug.cgi?id=2033602

https://github.com/advisories/GHSA-83x4-9cwr-5487

https://www.oracle.com/security-alerts/cpuapr2022.html

Details

Source: Mitre, NVD

Published: 2022-01-25

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 6.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 8.8

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00096