CVE-2026-4282
High
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.
SeverityHigh
CVSS7.4
Exploit probability—
Product
Redhat Build Of Keycloak
PublishedApr 2, 2026
First seenApr 2, 2026
Weakness typeCWE-653CWE-653
How to fix
Update
- org.keycloak:keycloak-services26.5.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| redhat build_of_keycloak | No range specified, 26.2, 26.2.15, 26.4, 26.4.11 | — |
| org.keycloak:keycloak-servicesMaven | v < 26.5.7 | 26.5.7 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.