FKIE_CVE-2026-9792

Vulnerability from fkie_nvd - Published: 2026-05-28 05:16 - Updated: 2026-06-26 08:16
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Summary
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.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:25097
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:25098
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:30049
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:30050
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-9792Mitigation, Vendor Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2482459Issue Tracking, Vendor Advisory
Impacted products
Vendor Product Version
redhat build_of_keycloak -
To clipboard 

{
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          "cpes": [
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          "vendor": "Red Hat",
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          "versions": [
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              "status": "unaffected",
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    }
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  "configurations": [
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in Keycloak\u0027s 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."
    }
  ],
  "id": "CVE-2026-9792",
  "lastModified": "2026-06-26T08:16:27.043",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
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            {
              "automatable": "yes"
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            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-29T18:32:16.047044Z",
          "version": "2.0.3"
        }
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  "published": "2026-05-28T05:16:40.537",
  "references": [
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      "url": "https://access.redhat.com/errata/RHSA-2026:25097"
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  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
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          "value": "CWE-280"
        }
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      "source": "secalert@redhat.com",
      "type": "Secondary"
    }
  ]
}



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