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Vulnerability DatabaseCVE-2026-4634
CVE-2026-4634:
Java vulnerability analysis and mitigation
A flaw was found in Keycloak. An unauthenticated attacker can exploit this vulnerability by sending a specially crafted POST request with an excessively long scope parameter to the OpenID Connect (OIDC) token endpoint. This leads to high resource consumption and prolonged processing times, ultimately resulting in a Denial of Service (DoS) for the Keycloak server.
Source: NVD
Related Java vulnerabilities:
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