Vulnerability Details CVE-2026-16089
A flaw was found in the keycloak-services component of Red Hat Build of Keycloak. The issue occurs because OAuth 2.0 authorization codes are not properly bound to the client that originally requested them. An attacker who can intercept an authorization code can modify it to be redeemed by their own client, potentially allowing them to obtain access tokens for a victim's identity.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 3.9%
CVSS Severity
CVSS v3 Score 5.4
References
Products affected by CVE-2026-16089
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cpe:2.3:a:redhat:build_of_keycloak:-