{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-16443",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-16443",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-05T13:44:09.557Z",
    "updatedAt": "2026-08-31T14:47:51.247Z",
    "importedAt": "2026-10-24T01:57:55.771Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Keycloak-services: keycloak-services: saml broker metadata import disables response signature validation",
      "summary": "A flaw was found in the SAML metadata import functionality of the keycloak-services component, which is the core engine for identity brokering in Red Hat Build of Keycloak. When importing identity provider metadata that lacks specific usage attributes for keys, the system incorrectly disables signature validation for SAML responses even if a signing certificate is provided. This issue allows an unauthenticated attacker to forge a SAML response and gain unauthorized access to a user account by knowing their external identifier.",
      "affected": [
        {
          "vendor": "Red Hat",
          "product": "Red Hat build of Keycloak 26.4",
          "packageName": "rhbk/keycloak-operator-bundle",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "26.4.14-1",
              "status": "unaffected",
              "versionType": "rpm",
              "lessThan": "*"
            }
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat build of Keycloak 26.4",
          "packageName": "rhbk/keycloak-rhel9",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "26.4-22",
              "status": "unaffected",
              "versionType": "rpm",
              "lessThan": "*"
            }
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat build of Keycloak 26.4",
          "packageName": "rhbk/keycloak-rhel9-operator",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "26.4-22",
              "status": "unaffected",
              "versionType": "rpm",
              "lessThan": "*"
            }
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat build of Keycloak 26.4.14",
          "packageName": "keycloak-services",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected",
          "versions": []
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat build of Keycloak 26.4.14",
          "packageName": "rhbk-openshift-rhel9/rhbk-openshift-rhel9",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected",
          "versions": []
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat build of Keycloak 26.6",
          "packageName": "rhbk/keycloak-operator-bundle",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "26.6.5-1",
              "status": "unaffected",
              "versionType": "rpm",
              "lessThan": "*"
            }
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat build of Keycloak 26.6",
          "packageName": "rhbk/keycloak-rhel9",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "26.6-11",
              "status": "unaffected",
              "versionType": "rpm",
              "lessThan": "*"
            }
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat build of Keycloak 26.6",
          "packageName": "rhbk/keycloak-rhel9-operator",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "26.6-11",
              "status": "unaffected",
              "versionType": "rpm",
              "lessThan": "*"
            }
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat build of Keycloak 26.6.5",
          "packageName": "keycloak-services",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected",
          "versions": []
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat build of Keycloak 26.6.5",
          "packageName": "rhbk-keycloak-rhel9/rhbk-keycloak-rhel9",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected",
          "versions": []
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat build of Keycloak 26.6.5",
          "packageName": "rhbk-openshift-rhel9/rhbk-openshift-rhel9",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected",
          "versions": []
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat Data Grid 8",
          "packageName": "keycloak-services",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected",
          "versions": []
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
          "packageName": "keycloak-services",
          "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
          "defaultStatus": "unaffected",
          "versions": []
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat Single Sign-On 7",
          "packageName": "keycloak-services",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected",
          "versions": []
        }
      ]
    }
  }
}