A flaw was found in Keycloak. An authenticated client could exploit an Insecure Direct Object Reference (IDOR) vulnerability in the Authorization Services Protection API endpoint. By knowing or obtaining a resource's unique identifier (UUID) belonging to another Resource Server within the same realm, the client could bypass authorization checks. This allows the client to perform unauthorized GET, PUT, and DELETE operations on resources, leading to information disclosure and potential unauthorized modification or deletion of data.
History

Tue, 19 May 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 19 May 2026 11:30:00 +0000

Type Values Removed Values Added
Description A flaw was found in Keycloak. An authenticated client could exploit an Insecure Direct Object Reference (IDOR) vulnerability in the Authorization Services Protection API endpoint. By knowing or obtaining a resource's unique identifier (UUID) belonging to another Resource Server within the same realm, the client could bypass authorization checks. This allows the client to perform unauthorized GET, PUT, and DELETE operations on resources, leading to information disclosure and potential unauthorized modification or deletion of data.
Title Keycloak: keycloak: unauthorized resource access and data modification via insecure direct object reference
First Time appeared Redhat
Redhat build Keycloak
Weaknesses CWE-639
CPEs cpe:/a:redhat:build_keycloak:
Vendors & Products Redhat
Redhat build Keycloak
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-05-19T16:33:22.235Z

Reserved: 2026-03-23T08:12:45.479Z

Link: CVE-2026-4630

cve-icon Vulnrichment

Updated: 2026-05-19T16:33:18.865Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-19T12:16:19.290

Modified: 2026-05-19T14:25:40.320

Link: CVE-2026-4630

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-19T12:30:05Z