CVE-2023-3597

Keycloak: secondary factor bypass in step-up authentication

Published Apr 25, 2024 CVSS 3.1 · 5 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2024-1090 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.
Github GHSA Github GHSA GHSA-4f53-xh3v-g8x4 Keycloak secondary factor bypass in step-up authentication
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
CPEs cpe:/a:redhat:red_hat_single_sign_on:7
Type Values Removed Values Added
CPEs cpe:/a:redhat:red_hat_single_sign_on:7.6
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Nov 11, 2025, 3:57 PM
Reserved
Jul 10, 2023, 5:01 PM
Status
Deferred
Published
Apr 25, 2024, 1:15 PM
Modified
Jun 17, 2026, 6:14 AM
Severity
Moderate
Public date
Apr 15, 2024, 12:00 AM