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CVE-2026-3121

Keycloak: org.keycloak/keycloak-services: keycloak: privilege escalation via manage-clients permission

Published: Mar 26, 2026Updated: Apr 2, 2026 Sources: CVE List NVDCWE-266
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.5%
Top 63.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Breakdown

AV:NAC:LPR:HUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-266

Affected Products

Red Hat build of Keycloak 26.4Red Hat
On-premWeb App
Web & CMS Plugins
Red Hat build of Keycloak 26.4.11Red Hat
On-prem
Operating Systems / linux-distro
Red Hat JBoss Enterprise Application Platform 8Red Hat
On-premWeb App
Enterprise Software / itsm-monitoring
Red Hat JBoss Enterprise Application Platform Expansion PackRed Hat
On-premOS
Operating Systems / linux-distro
Red Hat Single Sign-On 7Red Hat
On-premSecurity Product
Security Products / identity-access-mgmt
red hatcommercialUSOperating Systemsaka red hat
and 4 more affected products View all →

Exploitability

Official Patch Available
Workaround Available

References

https://access.redhat.com/errata/RHSA-2026:6477
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:6478
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-3121
access.redhat.com
and 1 more references View all →

Timeline

Published
Mar 26, 2026
Last Updated
Apr 2, 2026

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