{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-9792", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-05-28T03:09:25.012Z", "datePublished": "2026-05-28T03:44:18.671Z", "dateUpdated": "2026-05-28T03:44:18.671Z"}, "containers": {"cna": {"title": "Keycloak: keycloak: security restriction bypass allows unauthorized ropc token acquisition", "metrics": [{"other": {"content": {"value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "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."}], "affected": [{"vendor": "Red Hat", "product": "Red Hat Build of Keycloak", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "rhbk/keycloak-rhel9", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:build_keycloak:"]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-9792", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482459", "name": "RHBZ#2482459", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "datePublic": "2026-05-28T03:10:21.828Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-280", "description": "Improper Handling of Insufficient Permissions or Privileges", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-280: Improper Handling of Insufficient Permissions or Privileges", "workarounds": [{"lang": "en", "value": "To mitigate this issue, Keycloak administrators should review and adjust client policies designed to reject Resource Owner Password Credentials (ROPC) grants. Avoid using the `client-type`, `client-roles`, `client-attributes`, or `client-scopes` condition providers in conjunction with the `reject-ropc-grant` executor. Instead, configure policies to use the `grant-type` condition provider for ROPC rejection. A restart or reload of the Keycloak service may be required for these policy changes to take full effect."}], "timeline": [{"lang": "en", "time": "2026-05-28T03:09:09.710Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-05-28T03:10:21.828Z", "value": "Made public."}], "credits": [{"lang": "en", "value": "Red Hat would like to thank Evan Hendra (Independent Security Researcher) for reporting this issue."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-05-28T03:44:18.671Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-9792", "lastModified": "2026-05-28T05:16:40.537", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 2.5, "source": "secalert@redhat.com", "type": "Primary"}]}, "published": "2026-05-28T05:16:40.537", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/security/cve/CVE-2026-9792"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482459"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-280"}], "source": "secalert@redhat.com", "type": "Primary"}]}

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