CVE-2021-4133
HIGH
8.8
CVSS Score
Published: January 25, 2022 at 07:11 PM UTC
Updated: June 17, 2026 at 04:19 AM UTC
1 product affected across 1 vendorKeycloak
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Severity
HIGH8.8
Exploit prediction
EPSS 1%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
12.0.0 ≤ v < 15.1.115.1.1
Affected range stops below 15.1.1, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (4)
x_refsource_MISCIssue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2033602x_refsource_MISCThird Party Advisory
Source: [email protected]
https://github.com/keycloak/keycloak/issues/9247x_refsource_MISCThird Party Advisory
Source: [email protected]
https://github.com/keycloak/keycloak/security/advisories/GHSA-83x4-9cwr-5487x_refsource_MISCNot Applicable
Source: [email protected]
https://www.oracle.com/security-alerts/cpuapr2022.htmlCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-863
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