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Vulnerability record · CVE-2026-4282 · published 2 April 2026

CVE-2026-4282: Redhat build of keycloak vulnerability

Redhat · Build Of Keycloak

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.

7.4 CVSS 3.1 High EPSS 0.52% · top 58.3% CWE-653 · CWE-653
7.4CVSS 3.1 base score
0.52%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
13References
15 Jul 2026Last modified by NVD

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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 TrackingVendor 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 TrackingVendor Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4282.json

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-4282), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.