CVE-2026-4282Keycloak: keycloak: privilege escalation via forged authorization codes due to singleuseobjectprovider isolation flaw
Updated under an hour ago ()
Does this affect you?
It affects Red Hat build of Keycloak 26.2 and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.4 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-653
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Modified
- Record last updated
- Jul 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Red Hat Red Hat build of Keycloak 26.2 redhat:build_keycloak | from 26.2.15-1 not affected | CNA record |
Red Hat Red Hat build of Keycloak 26.2 redhat:build_keycloak | from 26.2.15-1 not affected | CISA ADP |
redhat build_of_keycloak redhat:build_of_keycloak | all versions; 26.2; 26.2.15; 26.4; 26.4.11 | NVD |
References
- https://access.redhat.com/errata/RHSA-2026:6475vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:6476vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:6477vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:6478vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2026-4282vdb-entry, x-refsource-redhat, vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2448061issue-tracking, x-refsource-redhat, vendor-advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4282.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.