PT-2026-44193 · Red Hat · Keycloak
CVE-2026-9798
·
Published
2026-05-28
·
Updated
2026-08-31
CVSS v3.1
4.3
Medium
| Vector | AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |
Name of the Vulnerable Software and Affected Versions
Keycloak (affected versions not specified)
Description
A flaw in the Client-Initiated Backchannel Authentication (CIBA) flow allows an attacker with valid client credentials to bypass brute-force protection. When a user account is temporarily locked following repeated failed login attempts, this bypass enables continued authentication attempts and token issuance, potentially leading to unauthorized access.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
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Weakness Enumeration
Related Identifiers
Affected Products
Keycloak