Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Red Hat Red Hat Build of Keycloak — Keycloak-services: keycloak-services: realm default-group reads disclose hidden groups under fgap v2
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L L N U H N N 6.5 .0019 9.4 —
AFFECTED
Product Versions Fixed
Red Hat Build of Keycloak unspecified —
Red Hat Build of Keycloak unspecified —
Red Hat Build of Keycloak 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)
Aug 6 RESCORED — CVE-2026-16108 (Red Hat Build of Keycloak). CVSS 4.3 → 6.5 (NVD).
Description
A flaw was found in the default-groups REST endpoint and realm representation of Keycloak. This component is responsible for managing groups that are automatically assigned to new users within a realm. The issue allows a delegated administrator with realm-viewing permissions to see the names and identifiers of hidden default groups, even if they lack the specific permissions to view those groups. This can lead to the exposure of sensitive organizational structures or internal group names.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| July 17, 2026 | Reserved | Reserved by redhat |
| July 17, 2026 | Published | Published (CNA: redhat) |
| August 6, 2026 | RESCORED | RESCORED — CVE-2026-16108 (Red Hat Build of Keycloak). CVSS 4.3 → 6.5 (NVD). |
Affected
Affected products and packages — 6 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | Red Hat Build of Keycloak | — | — | — |
| Red Hat | Red Hat Build of Keycloak | — | — | — |
| Red Hat | Red Hat Build of Keycloak | — | — | — |
| 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-2026-16108 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 Wednesday, August 19, 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.