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CVE-2026-16442

🗓️ 05 Aug 2026 15:00:39Reported by redhatType 
cve
 cve🔗 web.nvd.nist.gov👁 11 Views

CVE-2026-16442 affects Keycloak’s SAML broker component. The IdP-initiated SSO endpoint does not enforce whether a provider is restricted to account linking, enabling an attacker with control over a linked upstream identity to bypass login restric...

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB		CVE-2026-16442
5 Aug 202615:00
–attackerkb
cvelist
Cvelist		CVE-2026-16442 Keycloak-services: keycloak-services: saml idp-initiated broker login bypasses link-only restriction
5 Aug 202615:00
–cvelist
euvd
EUVD		EUVD-2026-53395
5 Aug 202615:00
–euvd
nvd
NVD		CVE-2026-16442
5 Aug 202616:16
–nvd
redhatcve
RedhatCVE		CVE-2026-16442
5 Aug 202613:45
–redhatcve
redhat
RedHat Linux		Important: Red Hat Security Advisory: Red Hat build of Keycloak 26.4.14 Security Update
5 Aug 202616:17
–redhat
redhat
RedHat Linux		keycloak-services: keycloak-services: SAML IdP-initiated broker login bypasses link-only restriction
5 Aug 202616:17
–redhat
redhat
RedHat Linux		Important: Red Hat Security Advisory: Red Hat build of Keycloak 26.4.14 Images Security Update
5 Aug 202616:20
–redhat
redhat
RedHat Linux		Important: Red Hat Security Advisory: Red Hat build of Keycloak 26.6.5 Security Update
5 Aug 202616:17
–redhat
redhat
RedHat Linux		keycloak-services: keycloak-services: SAML IdP-initiated broker login bypasses link-only restriction
5 Aug 202616:17
–redhat
Rows per page
Vulners
Node
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redhatbuild_keycloakMatch26.4el9
redhatbuild_keycloakMatch26.6el9
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    "product": "Red Hat build of Keycloak 26.4",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "rhbk/keycloak-operator-bundle",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "26.4.14-1",
        "lessThan": "*",
        "versionType": "rpm",
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      }
    ],
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.4",
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    ]
  },
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  },
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    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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    "packageName": "rhbk/keycloak-operator-bundle",
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  {
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    "packageName": "rhbk/keycloak-rhel9",
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    ],
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    ]
  },
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    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.6.5",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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  },
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    "defaultStatus": "unaffected",
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  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Data Grid 8",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "keycloak-services",
    "defaultStatus": "unaffected",
    "cpes": [
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    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
    "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
    "packageName": "keycloak-services",
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jbosseapxp"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Single Sign-On 7",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "keycloak-services",
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:red_hat_single_sign_on:7"
    ]
  }
]

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05 Aug 2026 19:17Current
5.5Medium risk
Vulners AI Score5.5
CVSS 3.17.4
SSVC
CWE-346
11