HIGH🇵🇱 Wersja polska

CVE-2026-4634

CVSS 7.5v3.1pub. 2026-04-02upd. 2026-06-30

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.

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  • Red Hat Build Of Keycloak

    APP
    Redhat
    26.226.2.1526.426.4.11
🔵
CHECK WITH VENDOR
No clear patch data available. Check vendor references.
Tags
Auth BypassDoS
CWE
References

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