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CVE-2026-9689 Keycloak: org.keycloak.protocol.oidc: http parameter pollution in oidc redirect uri allows response parameter duplication - #ghi-604

🗓️ 27 May 2026 10:35:03Reported by redhatType 
cvelist
 cvelist
🔗 www.cve.org👁 45 Views

Keycloak HTTP parameter pollution in OIDC redirect URIs allows attacker to manipulate authentication.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-9689
27 May 202610:35
attackerkb
Circl
CVE-2026-9689
28 May 202611:39
circl
CNNVD
Keycloak 安全漏洞
27 May 202600:00
cnnvd
CVE
CVE-2026-9689
27 May 202610:35
cve
EUVD
EUVD-2026-32212
27 May 202610:35
euvd
Github Security Blog
Keycloak Services has Improper Validation of Consistency within Input
27 May 202612:31
github
NVD
CVE-2026-9689
27 May 202612:17
nvd
OSV
GHSA-WCVJ-VPVW-9RR5 Keycloak Services has Improper Validation of Consistency within Input
27 May 202612:31
osv
Positive Technologies
PT-2026-43682
27 May 202600:00
ptsecurity
Positive Technologies
PT-2026-55165
27 May 202600:00
ptsecurity
Rows per page
[
  {
    "vendor": "Red Hat",
    "product": "Red Hat Build of Keycloak",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "rhbk/keycloak-rhel9",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:"
    ]
  }
]

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