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CVE-2026-3872

🗓️ 02 Apr 2026 12:37:30Reported by redhatType 
cve
 cve
🔗 web.nvd.nist.gov👁 349 Views

Keycloak flaw bypasses redirect path with wildcard, risking access token theft and disclosure.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-3872
2 Apr 202612:37
–attackerkb
cgr
Chainguard
CVE-2026-3872 vulnerabilities
5 Apr 202601:17
–cgr
circl
Circl
CVE-2026-3872
2 Apr 202614:55
–circl
cnnvd
CNNVD
Keycloak 安全漏洞
2 Apr 202600:00
–cnnvd
cvelist
Cvelist
CVE-2026-3872 Keycloak: keycloak: information disclosure due to redirect_uri validation bypass
2 Apr 202612:37
–cvelist
euvd
EUVD
EUVD-2026-18206
2 Apr 202615:31
–euvd
github
Github Security Blog
Keycloak: Redirect URI validation bypass via ..;/ path traversal in OIDC auth endpoint
2 Apr 202615:31
–github
jvn
Japan Vulnerability Notes
Multiple Vulnerabilities in Hitachi Ops Center Common Services
5 Aug 202601:11
–jvn
mend
Mend
CVE-2026-3872
2 Apr 202612:37
–mend
nvd
NVD
CVE-2026-3872
2 Apr 202613:16
–nvd
Rows per page
NVD
Vulners
Vulnrichment
Node
OR
redhatbuild_of_keycloakMatch26.2text-only
redhatbuild_of_keycloakMatch26.2.15text-only
redhatbuild_of_keycloakMatch26.4text-only
redhatbuild_of_keycloakMatch26.4.11text-only
[
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.2",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "rhbk/keycloak-operator-bundle",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "26.2.15-1",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.2::el9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.2",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "rhbk/keycloak-rhel9",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "26.2-18",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.2::el9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.2",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "rhbk/keycloak-rhel9-operator",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "26.2-18",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.2::el9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.2.15",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "unaffected",
    "packageName": "rhbk/keycloak-rhel9",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.2::el9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.4",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "rhbk/keycloak-operator-bundle",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "26.4.11-1",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.4",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "rhbk/keycloak-rhel9",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "26.4-14",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.4",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "rhbk/keycloak-rhel9-operator",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "26.4-14",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.4.11",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "unaffected",
    "packageName": "rhbk/keycloak-rhel9",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ]
  }
]

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15 Jul 2026 02:21Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.17.3
EPSS0.00588
SSVC
349