CVE-2023-3597

Keycloak: secondary factor bypass in step-up authentication

MEDIUM
5
CVSS Score
Published: April 25, 2024 at 12:20 PM UTC
Updated: June 17, 2026 at 06:14 AM UTC
Products not identified yet

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Severity
MEDIUM5
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

A flaw was found in Keycloak, where it does not correctly validate its client step-up authentication in org.keycloak.authentication. This flaw allows a remote user authenticated with a password to register a false second authentication factor along with an existing one and bypass authentication.

Affected

We have no canonical product record for this CVE. The source names may not have matched any product.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5MEDIUMredhat
Attack Vector
NETWORK
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-287

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