CVE catalog
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 authoriza
- Severity
- High · CVSS 7.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.43% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | build_of_keycloak | Not reported | Not reported | unknown |
| Cpe | build_of_keycloak | Not reported | Not reported | unknown |
Fixed-version evidence
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://access.redhat.com/errata/RHSA-2026:6475]
- [https://access.redhat.com/errata/RHSA-2026:6476]
- [https://access.redhat.com/errata/RHSA-2026:6477]
- [https://access.redhat.com/errata/RHSA-2026:6478]
- [https://access.redhat.com/security/cve/CVE-2026-4282]
- [https://bugzilla.redhat.com/show_bug.cgi?id=2448061]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-4282]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4282.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0977.json]
[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX]