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CVE-2026-9704 Keycloak: keycloak: privilege escalation due to oversized subject_token jwt

🗓️ 27 May 2026 12:56:00Reported by redhatType 
cvelist
 cvelist
🔗 www.cve.org👁 41 Views

Low-privilege user can escalate to client service account rights via oversized subject_token JWT at Keycloak TokenEndpoint.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-9704
27 May 202612:56
attackerkb
Circl
CVE-2026-9704
27 May 202616:23
circl
CNNVD
Keycloak 安全漏洞
27 May 202600:00
cnnvd
CVE
CVE-2026-9704
27 May 202612:56
cve
EUVD
EUVD-2026-32300
27 May 202612:56
euvd
NVD
CVE-2026-9704
27 May 202614:17
nvd
Positive Technologies
PT-2026-43993
27 May 202600:00
ptsecurity
RedhatCVE
CVE-2026-9704
27 May 202612:50
redhatcve
RedHat Linux
Moderate: Red Hat Security Advisory: Red Hat build of Keycloak 26.6.3 Images Update
10 Jun 202617:35
redhat
RedHat Linux
Moderate: Red Hat Security Advisory: Red Hat build of Keycloak 26.6.3 Update
10 Jun 202617:38
redhat
Rows per page
[
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.6",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "rhbk/keycloak-operator-bundle",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "26.6.3-3",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.6",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "rhbk/keycloak-rhel9",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "26.6-6",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.6",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "rhbk/keycloak-rhel9-operator",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "26.6-6",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.6.3",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "unaffected",
    "packageName": "rhbk/keycloak-rhel9",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ]
  }
]

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