CVE-2026-92855

{
  "etk_id": "ETK-2026-3684",
  "cve_id": "CVE-2026-92855",
  "display_id": "CVE-2026-92855",
  "ghsa_id": "GHSA-486h-gxch-8c4x",
  "euvd_id": "EUVD-2026-117606",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Missing holder-of-key validation in Keycloak SAML broker",
  "summary": "Keycloak SAML identity-broker deployments that process holder-of-key assertions are affected. An attacker who obtains a victim's signed assertion may replay it to impersonate that user because proof of possession of the associated private key is not verified.",
  "mitigation": "Restrict access to affected SAML identity-broker flows and avoid holder-of-key assertion use where operationally feasible. Apply the vendor's update when available; the evidence does not identify a fixed version.",
  "vendor": "Red Hat",
  "product": "Red Hat Build of Keycloak",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "keycloak/rhbk-openshift-rhel9",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "keycloak-services",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "rhbk/keycloak-rhel9",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 7.4,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 15.8410268,
  "t0_at": "2026-11-05T17:15:07.565000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-11-05T17:15:07.565000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-05T17:15:07.565000+00:00",
      "url": "https://github.com/advisories/GHSA-486h-gxch-8c4x"
    }
  }
}