CVE-2026-16103
Full vulnerability record from the local CVENow database.
Description
A flaw was found in the keycloak-services component of Keycloak. This issue is an incomplete fix for CVE-2026-9798, where brute-force protection checks were added to the Client-Initiated Backchannel Authentication (CIBA) initiation handler but were omitted from the token redemption handler. This allows an attacker with valid client credentials to obtain access and refresh tokens for a user account that has been locked due to brute-force protection, provided the authentication request was started before the lockout occurred and was approved by the user.
Severity
MEDIUM
CVSS score
4.3
(v3.1)
Vulnerability status
Modified
Source identifier
Published
2026-07-17 17:17:14.263000
Last modified
2026-11-06 18:18:08.880000
View original CVE JSON
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"published": "2026-07-17T17:17:14.263",
"lastModified": "2026-11-06T18:18:08.880",
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}
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"source": "[email protected]"
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