CVE-2026-3121

What it is

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.

At a glance

Exploitability

Can be exploited over the network with an admin-level account. High risk of data exposure, data tampering.

Exploit odds

0.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-03-26 19:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 10:43 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.5% in the next 30 days (EPSS).
• Severity: 6.5 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2026-03-26 19:17 UTC

Last modified

2026-06-17 10:43 UTC

Exploit probability

0.5% · EPSS, next 30 days

Weakness

CWE-266

Record status

Modified

Affected

• Redhat Build Of Keycloak
• Redhat Jboss Enterprise Application Platform 8.0.0
• Redhat Jboss Enterprise Application Platform Expansion Pack
• Redhat Single sign-on 7.0

Attack profile CVSS 3.1 · 6.5

Attack vector

Network

Complexity

Low

Privileges needed

High

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2026-3121.md and follow it. Check whether this project is affected by CVE-2026-3121. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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