CVE-2026-4282

A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens, resulting in privilege escalation.

CVSS v3 7.4 HIGH

7.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:6475	Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:6476	Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:6477	Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:6478	Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-4282	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2448061	Issue Tracking Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:6475	Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:6476	Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:6477	Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:6478	Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-4282	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2448061	Issue Tracking Vendor Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4282.json

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:redhat:build_of_keycloak:-::::text-only:::
	cpe:2.3:a:redhat:build_of_keycloak:26.2::::text-only:::
	cpe:2.3:a:redhat:build_of_keycloak:26.2.15::::text-only:::
	cpe:2.3:a:redhat:build_of_keycloak:26.4::::text-only:::
	cpe:2.3:a:redhat:build_of_keycloak:26.4.11::::text-only:::

History

No history.

Information

Published : 2026-04-02 13:16

Updated : 2026-07-15 02:22

NVD link : CVE-2026-4282

Mitre link : CVE-2026-4282

CVE.ORG link : CVE-2026-4282

JSON object : View

Products Affected

redhat

build_of_keycloak

CWE

CWE-653

Improper Isolation or Compartmentalization

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