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CVE-2026-9087 Keycloak: cross-session email verification proof not bound to upstream identity in first-broker-login

🗓️ 20 May 2026 16:13:03Reported by redhatType 
cvelist
 cvelist
🔗 www.cve.org👁 50 Views

Keycloak cross-session email verification proof not bound to upstream identity in first-broker-login, allowing a second upstream account to link to the victim's local account.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-9087
20 May 202616:13
attackerkb
Circl
CVE-2026-9087
20 May 202619:16
circl
CNNVD
Keycloak 安全漏洞
20 May 202600:00
cnnvd
CVE
CVE-2026-9087
20 May 202616:13
cve
EUVD
EUVD-2026-31134
20 May 202616:13
euvd
Github Security Blog
Keycloak: Insufficient verification proof scoping enables identity provider account linking attack and account compromise
20 May 202618:31
github
NVD
CVE-2026-9087
20 May 202617:16
nvd
OSV
GHSA-M6QJ-3MPP-57V8 Keycloak: Insufficient verification proof scoping enables identity provider account linking attack and account compromise
20 May 202618:31
osv
OSV
MINI-7R72-F98M-FXC6
12 Jun 202616:45
osv
OSV
MINI-WGC3-WR2V-QC67
12 Jun 202616:45
osv
Rows per page
[
  {
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    "product": "Red Hat build of Keycloak 26.4",
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    ],
    "cpes": [
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  },
  {
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    "packageName": "rhbk/keycloak-rhel9",
    "defaultStatus": "affected",
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    ],
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  {
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    ],
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    ]
  },
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    "vendor": "Red Hat",
    "product": "Red Hat build of Keycloak 26.6.3",
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    "packageName": "rhbk/keycloak-rhel9",
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ]
  }
]

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