Vulnerability Details CVE-2026-9689
A flaw was found in Keycloak, an open-source identity and access management solution. When a client application is configured to accept broad redirect Uniform Resource Identifiers (URIs), a remote attacker can manipulate the authentication process by crafting a special web address. If a user clicks this link, the client application might incorrectly prioritize attacker-controlled information over legitimate data. This vulnerability, known as HTTP parameter pollution, could allow an attacker to bypass security measures or gain unauthorized access to resources.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 24.8%
CVSS Severity
CVSS v3 Score 4.2
References
Products affected by CVE-2026-9689
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cpe:2.3:a:redhat:build_of_keycloak:-