CVE-2026-16105CWE-639CWE-862broken-access-control

CVE-2026-16105

Medium · published July 31, 2026

CVSS v3.1
4.9
EPSS
0%
Percentile
35.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00423 · 35.6th percentile
Weaknesses
CWE-639 · Authorization Bypass Through User-Controlled Key; CWE-862 · Missing Authorization
Published
2026-07-31T12:16Z
Affected products (1)
ProductVersionsFixed in
redhat/build_of_keycloakall versions—
References (4)
https://access.redhat.com/errata/RHSA-2026:68277 · [email protected]https://access.redhat.com/errata/RHSA-2026:68278 · [email protected]https://access.redhat.com/security/cve/CVE-2026-16105 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2501738 · [email protected]
EPSS history
Timeline
  • 31 JUL 07:03Z
    Keycloak-services: keycloak-services: missing per-role authorization on rolecontainerresource composite endpoints
    cvelistv5