GHSA-hj93-h7pg-fh6v
Keycloak: Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw
At a glance
- Published
- Updated
- CVE
- CVE-2026-4282
- Aliases
- BIT-keycloak-2026-4282
- CVSS_V3
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
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.
Affected packages
| Package | Versions |
|---|---|
| Maven · org.keycloak:keycloak-services | introduced 0, fixed 26.5.7 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-4282 ADVISORY
- https://github.com/keycloak/keycloak/issues/47719 WEB
- https://github.com/keycloak/keycloak/commit/9046f201125a6fd6be9c116b99d348509d99d4a5 WEB
- https://access.redhat.com/errata/RHSA-2026:6475 WEB
- https://access.redhat.com/errata/RHSA-2026:6476 WEB
- https://access.redhat.com/errata/RHSA-2026:6477 WEB
- https://access.redhat.com/errata/RHSA-2026:6478 WEB
- https://access.redhat.com/security/cve/CVE-2026-4282 WEB
- https://bugzilla.redhat.com/show_bug.cgi?id=2448061 WEB
- https://github.com/keycloak/keycloak PACKAGE
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |