CVE-2026-4282

HIGH EPSS 33.2%

Published Apr 2, 20262mo ago · Modified Jun 17, 20261w ago

7.4 CVSS 3.1

High

Published Apr 2, 2026 2mo ago

Last Modified Jun 17, 2026 1w ago

Description

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 Details

Base Score

7.4

Exploitability

2.2

Impact

5.2

Vector string

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector Network

Attack Complexity High

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality High

Integrity High

Availability None

Threat Intelligence

EPSS Exploit Probability

33.2% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-653

Affected Products 5

Vendor	Product	Version	Range
redhat	build_of_keycloak	*	any
redhat	build_of_keycloak	26.2	any
redhat	build_of_keycloak	26.2.15	any
redhat	build_of_keycloak	26.4	any
redhat	build_of_keycloak	26.4.11	any

References 6

access.redhat.com https://access.redhat.com/errata/RHSA-2026:6475

Vendor Advisory
access.redhat.com https://access.redhat.com/errata/RHSA-2026:6476

Vendor Advisory
access.redhat.com https://access.redhat.com/errata/RHSA-2026:6477

Vendor Advisory
access.redhat.com https://access.redhat.com/errata/RHSA-2026:6478

Vendor Advisory
access.redhat.com https://access.redhat.com/security/cve/CVE-2026-4282

Vendor Advisory
bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2448061

Issue TrackingVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.