CVE-2026-3121

Name: CVE-2026-3121
Creator: NVD / NIST
Published: 2026-03-26T19:17:06.213+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 0.47%

Last modified Jun 17, 2026

CVE-2026-3121 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. A flaw was found in Keycloak. An administrator with `manage-clients` permission can exploit a misconfiguration where this permission is equivalent to `manage-permissions`. EPSS estimates a 0.47% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.2/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.47%

37.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-266

Affected Software

Vendor	Product	Versions
Redhat	Build Of Keycloak	All versions
Redhat	Jboss Enterprise Application Platform	8.0.0
Redhat	Jboss Enterprise Application Platform Expansion Pack	All versions
Redhat	Single Sign-On	7.0

References

https://access.redhat.com/errata/RHSA-2026:6477
https://access.redhat.com/errata/RHSA-2026:6478
https://access.redhat.com/security/cve/CVE-2026-3121Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2442277Issue Tracking, Vendor Advisory

Timeline

Published: Mar 26, 2026
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2026-3121?

How severe is CVE-2026-3121?

CVE-2026-3121 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 0.47% probability of exploitation in the next 30 days.

How do I fix CVE-2026-3121?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-3121?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST