Keycloak-services: keycloak-services: missing per-role authorization on rolecontainerresource composite endpoints (CVE-2026-16105) | HOL Guard CVE

Medium · CVSS 4.9CVE-2026-16105

Keycloak-services: keycloak-services: missing per-role authorization on rolecontainerresource composite endpoints

Answer in brief

CVE-2026-16105 records a Medium severity (CVSS 4.9) vulnerability in Keycloak-services: keycloak-services: missing per-role authorization on rolecontainerresource composite endpoints. The current sources do not mark it as known exploited. Affected software not mapped in the current feed; confirm the named product and version against your inventory.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 31, 2026Updated Sep 16, 2026Source checked Sep 20, 2026First seen by HOL Aug 3, 2026Material review Sep 16, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 4.9
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 4.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

Affected software not mapped in the current feed; confirm the named product and version against your inventory.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:a:redhat:build_of_keycloak:-::::-:::	Not reported	Not reported

Recommended response

Confirm exposure. Identify whether the named product or interface exists in your inventory, then review the linked upstream references for affected versions and vendor guidance.

Evidence timeline and material changes

Published upstream
Jul 31, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 3, 2026

Sources and claim methodology

Upstream source description

A flaw was found in the RoleContainerResource component of Keycloak. The issue occurs because certain name-based endpoints in the admin REST API do not properly enforce authorization checks when managing composite roles. This allows a delegated administrator with manage-realm permissions to remove essential child roles from built-in admin roles, potentially disrupting administrative functions within a realm.

Quoted source text, attributed separately from HOL analysis.