CVE-2026-4282
HIGHCVSS 7.4/10EPSS 0.42%
Last modified
CVE-2026-4282 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. EPSS estimates a 0.42% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Build Of Keycloak | All versions |
| Redhat | Build Of Keycloak | 26.2 |
| Redhat | Build Of Keycloak | 26.2.15 |
| Redhat | Build Of Keycloak | 26.4 |
| Redhat | Build Of Keycloak | 26.4.11 |
References
- https://access.redhat.com/errata/RHSA-2026:6475Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:6476Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:6477Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:6478Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-4282Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2448061Issue Tracking, Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:6475Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:6476Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:6477Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:6478Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-4282Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2448061Issue Tracking, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2026-4282?
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.
How severe is CVE-2026-4282?
CVE-2026-4282 has a CVSS score of 7.4/10 (HIGH severity). The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.
How do I fix CVE-2026-4282?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2026-4282?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST