Is CVE-2026-4282 actively exploited?

CVE-2026-4282 has no public evidence of in-the-wild exploitation as of 2026-04-16.

What is the CVSS score for CVE-2026-4282?

CVE-2026-4282 has a CVSS score of 7.4 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

How do I patch CVE-2026-4282?

Patch guidance is available from redhat security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-4282.

Fix CVE-2026-4282 - HIGH redhat build of keycloak

Q: Which products are affected by CVE-2026-4282?

5 products: redhat build of keycloak, redhat build of keycloak, redhat build of keycloak, redhat build of keycloak, redhat build of keycloak.

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 Metrics

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector: network
Complexity: high
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: none
Weaknesses: CWE-653

Metadata

Primary Vendor: REDHAT
Published: 4/2/2026
Last Modified: 4/16/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

redhat : build_of_keycloakredhat : build_of_keycloakredhat : build_of_keycloakredhat : build_of_keycloakredhat : build_of_keycloak

Remediation Guidance

Executive Summary

View on NIST NVD