Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-16106
Red Hat Red Hat build of Keycloak 26.6 — Keycloak-services: keycloak-services: incorrect authorization in admin role-composite deletion allows delegated admin to remove privileged child roles
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L H N U N H N 4.9 .0042 34.4 —
AFFECTED
Product Versions Fixed
Red Hat build of Keycloak 26.6 unspecified 26.6.7-3
Red Hat build of Keycloak 26.6 unspecified 26.6-20
Red Hat build of Keycloak 26.6 unspecified 26.6-20
Red Hat build of Keycloak 26.6.7 unspecified —
Red Hat build of Keycloak 26.6.7 unspecified —
Red Hat build of Keycloak 26.6.7 unspecified —
Red Hat Data Grid 8 unspecified —
Red Hat JBoss Enterprise Application Platform Expansion Pack unspecified —
Red Hat Single Sign-On 7 unspecified —
TIMELINE
Jul 17 Reserved by redhat
Jul 17 Published (CNA: redhat)
Sep 16 PATCH SHIPPED — CVE-2026-16106 (Red Hat build of Keycloak 26.6). Fixed in Red Hat build of Keycloak 26.6 26.6.7-3.
Description
A flaw was found in the admin REST API of Keycloak, a solution for identity and access management. The issue occurs when a delegated administrator attempts to remove a child role from a composite role. Due to missing authorization checks, an attacker with limited administrative permissions can remove privileged roles they are not authorized to manage, leading to a loss of access for other users and administrators.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| July 17, 2026 | Reserved | Reserved by redhat |
| July 17, 2026 | Published | Published (CNA: redhat) |
| September 16, 2026 | PATCH SHIPPED | PATCH SHIPPED — CVE-2026-16106 (Red Hat build of Keycloak 26.6). Fixed in Red Hat build of Keycloak 26.6 26.6.7-3. |
Affected
Affected products and packages — 9 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | Red Hat build of Keycloak 26.6 | — | — | 26.6.7-3 |
| Red Hat | Red Hat build of Keycloak 26.6 | — | — | 26.6-20 |
| Red Hat | Red Hat build of Keycloak 26.6 | — | — | 26.6-20 |
| Red Hat | Red Hat build of Keycloak 26.6.7 | — | — | — |
| Red Hat | Red Hat build of Keycloak 26.6.7 | — | — | — |
| Red Hat | Red Hat build of Keycloak 26.6.7 | — | — | — |
| Red Hat | Red Hat Data Grid 8 | — | — | — |
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack | — | — | — |
| Red Hat | Red Hat Single Sign-On 7 | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-16106 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
