CVE-2026-19607

A flaw was found in the first-broker-login flow of the keycloak-services component. This component handles the initial authentication and account linking when a user logs in via an external identity provider. The issue allows an attacker to register a matching username on an external provider to trigger a collision in Keycloak, which results in the legitimate user being locked out of their account.

Score
CVSS 3.1 5.3 Medium
Status
Awaiting Analysis - secalert@redhat.com
Published
2026-09-16
Last modified
2026-09-16
Weaknesses
CWE-287

Affected products

References

 
 
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