Keycloak: keycloak: security restriction bypass allows unauthorized ropc token acquisition_CVE-2026-9792

{
    "lastseen": "",
    "description": "A flaw was found in Keycloak's Client Policies, specifically within the `org.keycloak.protocol.oidc` component. When certain condition providers (client-type, client-roles, client-attributes, client-scopes) are used to enforce security restrictions, the `reject-ropc-grant` executor is silently bypassed. This allows an unauthenticated remote attacker to obtain tokens via a Resource Owner Password Credentials (ROPC) grant, even when a policy is explicitly configured to block it. This bypass can lead to unauthorized access and information disclosure.",
    "published": "2026-05-28T03:44:18.671Z",
    "modified": "2026-05-28T03:44:18.671Z",
    "type": "cve",
    "title": "Keycloak: keycloak: security restriction bypass allows unauthorized ropc token acquisition",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-9792\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2482459",
    "id": "CVE-2026-9792",
    "bulletinFamily": "",
    "cwe": [
        "CWE-280"
    ],
    "cvelist": null,
    "sourceData": "",
    "sourceHref": "",
    "cvss": {
        "score": 6.5,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
        "version": "3.1"
    },
    "cvss2": [],
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        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
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            "baseScore": 0,
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Red Hat Build of Keycloak",
    "version": "",
    "vendor": "Red Hat",
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    "ai_score": 0
}