CVE-2026-92855

{
  "id": "CVE-2026-92855",
  "sourceIdentifier": "[email protected]",
  "published": "2026-11-05T18:17:10.707",
  "lastModified": "2026-11-05T18:17:10.843",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in the SAML identity broker component of Keycloak, which is used to delegate authentication to external identity providers. The issue occurs because the broker fails to verify that a user actually possesses the private key associated with a holder-of-key assertion. An attacker who intercepts a victim signed assertion can replay it to gain unauthorized access and impersonate the victim without needing their private key."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Red Hat",
          "product": "Red Hat Build of Keycloak",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "keycloak/rhbk-openshift-rhel9",
          "cpes": [
            "cpe:/a:redhat:build_keycloak:"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat Build of Keycloak",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "keycloak-services",
          "cpes": [
            "cpe:/a:redhat:build_keycloak:"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat Build of Keycloak",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "rhbk/keycloak-rhel9",
          "cpes": [
            "cpe:/a:redhat:build_keycloak:"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat Single Sign-On 7",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "keycloak-services",
          "cpes": [
            "cpe:/a:redhat:red_hat_single_sign_on:7"
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 5.2
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://access.redhat.com/security/cve/CVE-2026-92855",
      "source": "[email protected]"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2535814",
      "source": "[email protected]"
    }
  ]
}