{
  "threat_severity" : "Moderate",
  "public_date" : "2026-05-19T10:43:47Z",
  "bugzilla" : {
    "description" : "keycloak: org.keycloak.services: Keycloak: Information Disclosure via evaluate-scopes Admin API",
    "id" : "2455327",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2455327"
  },
  "cvss3" : {
    "cvss3_base_score" : "4.9",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
    "status" : "verified"
  },
  "cwe" : "CWE-639",
  "details" : [ "A flaw was found in Keycloak. A low-privilege administrator with the 'view-clients' role can exploit this by invoking the 'evaluate-scopes' Admin API endpoints with an arbitrary user ID (userId) parameter. This vulnerability allows for cross-role personally identifiable information (PII) leakage, enabling unauthorized visibility into user identities and authorizations across the realm. Exploitation is possible remotely via network access to the Admin API.", "A flaw was found in Keycloak. A low-privilege administrator with the 'view-clients' role can exploit this by invoking the 'evaluate-scopes' Admin API endpoints with an arbitrary user ID (userId) parameter. This vulnerability allows for cross-role personally identifiable information (PII) leakage, enabling unauthorized visibility into user identities and authorizations across the realm. Exploitation is possible remotely via network access to the Admin API." ],
  "statement" : "This is a Moderate impact vulnerability affecting Red Hat Build of Keycloak (RHBK). A low-privilege administrator with the `view-clients` role can exploit the `evaluate-scopes` Admin API endpoints to disclose sensitive user profile and role data. This allows unauthorized visibility into user identities and authorizations across the realm, requiring network access to the Admin API for exploitation.",
  "affected_release" : [ {
    "product_name" : "Red Hat build of Keycloak 26.4",
    "release_date" : "2026-05-20T00:00:00Z",
    "advisory" : "RHSA-2026:19597",
    "cpe" : "cpe:/a:redhat:build_keycloak:26.4::el9",
    "package" : "rhbk/keycloak-operator-bundle:26.4.12-1"
  }, {
    "product_name" : "Red Hat build of Keycloak 26.4",
    "release_date" : "2026-05-20T00:00:00Z",
    "advisory" : "RHSA-2026:19597",
    "cpe" : "cpe:/a:redhat:build_keycloak:26.4::el9",
    "package" : "rhbk/keycloak-rhel9:26.4-17"
  }, {
    "product_name" : "Red Hat build of Keycloak 26.4",
    "release_date" : "2026-05-20T00:00:00Z",
    "advisory" : "RHSA-2026:19597",
    "cpe" : "cpe:/a:redhat:build_keycloak:26.4::el9",
    "package" : "rhbk/keycloak-rhel9-operator:26.4-17"
  }, {
    "product_name" : "Red Hat build of Keycloak 26.4.12",
    "release_date" : "2026-05-20T00:00:00Z",
    "advisory" : "RHSA-2026:19596",
    "cpe" : "cpe:/a:redhat:build_keycloak:26.4::el9",
    "package" : "rhbk/keycloak-rhel9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-37978\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-37978" ],
  "name" : "CVE-2026-37978",
  "mitigation" : {
    "value" : "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
    "lang" : "en:us"
  },
  "csaw" : false
}