CVE-2026-4282

high Red Hat
CVSS v3 Base Score
7.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Characteristics
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
High
Availability
None
Published: April 2, 2026 (42 days ago)
Last Modified: April 2, 2026
Vendor: Red Hat
Fix Available: ✓ Yes
Source: REDHAT

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.

CWE

CWE-653

Affected Products

Red Hat build of Keycloak 26.2Red Hat build of Keycloak 26.2.15Red Hat build of Keycloak 26.4Red Hat build of Keycloak 26.4.11

Fix Status

✅ Fix Available

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov