CVE-2023-3597
Keycloak: secondary factor bypass in step-up authentication
CVSS Score
5.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-287 |
| Published | Apr 25, 2024 |
| Last Updated | Nov 11, 2025 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Affected Versions
Red Hat / Red Hat build of Keycloak 22
All versions affected Red Hat / Red Hat build of Keycloak 22
All versions affected Red Hat / Red Hat build of Keycloak 22
All versions affected Red Hat / Red Hat build of Keycloak 22.0.10
All versions affected Red Hat / RHSSO 7.6.8
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2024:1866 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:1867 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:1868 access.redhat.com: https://access.redhat.com/security/cve/CVE-2023-3597 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2221760
Credits
Red Hat would like to thank Johannes Bergmann (Bosch) for reporting this issue.