CVE-2026-4628CWE-284broken-access-control

CVE-2026-4628

Medium · published March 23, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
18.9
In the wild
Unconfirmed
What it is

A flaw was found in Keycloak. An improper Access Control vulnerability in Keycloak’s User-Managed Access (UMA) resource_set endpoint allows attackers with valid credentials to bypass the allowRemoteResourceManagement=false restriction. This occurs due to incomplete enforcement of access control checks on PUT operations to the resource_set endpoint. This issue enables unauthorized modification of protected resources, impacting data integrity.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00275 · 18.9th percentile
Weakness
CWE-284 · Improper Access Control
Published
2026-03-23T13:16Z
Affected products (1)
ProductVersionsFixed in
redhat/build_of_keycloakall versions—
References (3)
https://access.redhat.com/errata/RHSA-2026:19596 · [email protected]https://access.redhat.com/security/cve/CVE-2026-4628 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2450240 · [email protected]
EPSS history
Timeline
  • 23 MAR 08:09Z
    Keycloak: org.keycloak.authorization: keycloak: unauthorized resource modification due to improper access control
    cvelistv5