High severity · published Mar 26, 2026
CVE-2026-3121
Keycloak: org.keycloak/keycloak-services: keycloak: privilege escalation via manage-clients permission
7.2
CVSS
0.5%
EPSS
No
On KEV
Description
A flaw was found in Keycloak. An administrator with `manage-clients` permission can exploit a misconfiguration where this permission is equivalent to `manage-permissions`. This allows the administrator to escalate privileges and gain control over roles, users, or other administrative functions within the realm. This privilege escalation can occur when admin permissions are enabled at the realm level.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat JBoss Enterprise Application Platform 8 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat JBoss Enterprise Application Platform Expansion Pack · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat build of Keycloak 26.4 · Red Hat
All versions, or not specified · source: vendor
BO
Build OF Keycloak · Redhat
All versions, or not specified · source: NVD
JE
Jboss Enterprise Application Platform · Redhat
8.0.0 · source: NVD
JE
Jboss Enterprise Application Platform Expansion Pack · Redhat
All versions, or not specified · source: NVD
SS
Single Sign-on · Redhat
7.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-3121
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-3121
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:6477
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:6478
Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-3121
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2442277
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