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CVE-2026-9086 Keycloak: keycloak: cross-site scripting (xss) via case-insensitive uri validation bypass

🗓️ 25 Jun 2026 16:16:46Reported by redhatType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

Keycloak XSS via case-insensitive URI validation bypass; admin manage-client can register redirect.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-9086
25 Jun 202616:16
attackerkb
CVE
CVE-2026-9086
25 Jun 202616:16
cve
EUVD
EUVD-2026-39473
25 Jun 202616:16
euvd
NVD
CVE-2026-9086
25 Jun 202617:17
nvd
Positive Technologies
PT-2026-52506
25 Jun 202600:00
ptsecurity
RedhatCVE
CVE-2026-9086
25 Jun 202616:01
redhatcve
Vulnrichment
CVE-2026-9086 Keycloak: keycloak: cross-site scripting (xss) via case-insensitive uri validation bypass
25 Jun 202616:16
vulnrichment
[
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.6",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "keycloak-rhel9-container",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "26.6-8",
        "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": "keycloak-rhel9-operator-container",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "26.6-8",
        "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-operator-bundle",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "26.6.4-2",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.6.4",
    "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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