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CVE-2026-18211

🗓️ 31 Jul 2026 07:08:24Reported by redhatType 
cve
 cve
🔗 web.nvd.nist.gov👁 75 Views

Keycloak secure-client-uris policy bypass via localhost-prefixed domains could expose auth codes.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-18211
31 Jul 202607:08
–attackerkb
cvelist
Cvelist
CVE-2026-18211 Keycloak-services: keycloak-services: secure-client-uris policy bypass via localhost-prefixed domains
31 Jul 202607:08
–cvelist
euvd
EUVD
EUVD-2026-51483
31 Jul 202607:08
–euvd
mend
Mend
CVE-2026-18211
31 Jul 202607:08
–mend
nvd
NVD
CVE-2026-18211
31 Jul 202608:16
–nvd
ptsecurity
Positive Technologies
PT-2026-66726
31 Jul 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-18211: Improper Input Validation
31 Jul 202600:00
–rapid7
redhatcve
RedhatCVE
CVE-2026-18211
31 Jul 202607:08
–redhatcve
snyk
Snyk
Improperly Implemented Security Check for Standard
28 Jul 202612:55
–snyk
veracode
Veracode
Security Restriction Bypass
24 Aug 202608:42
–veracode
Rows per page
NVD
[
  {
    "vendor": "Red Hat",
    "product": "Red Hat Build of Keycloak",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "keycloak-services",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Build of Keycloak",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "rhbk-keycloak-rhel9/rhbk-keycloak-rhel9",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Build of Keycloak",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "rhbk-openshift-rhel9/rhbk-openshift-rhel9",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Data Grid 8",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "keycloak-services",
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_data_grid:8"
    ]
  },
  {
    "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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31 Aug 2026 15:22Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.14.2 - 5.4
EPSS0.00307
SSVC
75