What is CVE-2026-18207?

CVE-2026-18207 is a medium-severity vulnerability in Red Hat Build Of Keycloak, classified under Improper Authorization. CVSS score: 6.5/10. Published 2026-07-29.

How severe is CVE-2026-18207?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Red Hat Build Of Keycloak

CVE-2026-18207

A flaw was found in the client policy enforcement mechanism of Keycloak. The issue occurs when the system checks group membership by name instead of a unique identifier. An attacker with client management privileges could bypass security p…

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

Affected products

Red Hat Build Of Keycloak
Red Hat Data Grid 8
Red Hat Jboss Enterprise Application Platform Expansion Pack
Red Hat Single Sign-on 7

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

secalert@redhat.com (x_refsource_REDHAT, vdb-entry)

Frequently asked questions

What is CVE-2026-18207?: CVE-2026-18207 is a medium-severity vulnerability in Red Hat Build Of Keycloak, classified under Improper Authorization. CVSS score: 6.5/10. Published 2026-07-29.
How severe is CVE-2026-18207?: Medium severity. CVSS v3 base score is 6.5 out of 10.