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CVE-2026-4282 Keycloak: keycloak: privilege escalation via forged authorization codes due to singleuseobjectprovider isolation flaw

🗓️ 02 Apr 2026 12:44:52Reported by redhatType 
cvelist
 cvelist
🔗 www.cve.org👁 29 Views

CVE-2026-4282: Keycloak flaw lets unauthenticated actors forge authorization codes to obtain admin tokens.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-4282
2 Apr 202612:44
attackerkb
cgr
Chainguard
CVE-2026-4282 vulnerabilities
5 Apr 202601:17
cgr
circl
Circl
CVE-2026-4282
2 Apr 202614:18
circl
cnnvd
CNNVD
Keycloak 安全漏洞
2 Apr 202600:00
cnnvd
cve
CVE
CVE-2026-4282
2 Apr 202612:44
cve
euvd
EUVD
EUVD-2026-18208
2 Apr 202615:31
euvd
github
Github Security Blog
Keycloak: Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw
2 Apr 202615:31
github
nessus
Tenable Nessus
Keycloak 26.2 < 26.2.15 / 26.4 < 26.4.11 / 26.5 < 26.5.7 Multiple Vulnerabilities
27 Jul 202600:00
nessus
nvd
NVD
CVE-2026-4282
2 Apr 202613:16
nvd
osv
OSV
CGA-P87W-FWWP-XWQQ
4 Apr 202618:15
osv
Rows per page
[
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    "defaultStatus": "affected",
    "versions": [
      {
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        "lessThan": "*",
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    ],
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.2::el9"
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  },
  {
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    ],
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      }
    ],
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.4::el9"
    ]
  },
  {
    "vendor": "Red Hat",
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    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "rhbk/keycloak-rhel9-operator",
    "defaultStatus": "affected",
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    "vendor": "Red Hat",
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    "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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