CVE-2026-4628

EUVD-2026-14389

23.03.2026, 09:16

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	4.3 MEDIUM	NETWORK	LOW	LOW	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: 8%

Affected Products (NVD)

Vendor	Product	Version
redhat	build_of_keycloak	-

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-284 - Improper Access Control
The software does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

References

https://access.redhat.com/security/cve/CVE-2026-4628

https://bugzilla.redhat.com/show_bug.cgi?id=2450240