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EPSS 0.0%top 92%

CVE-2026-9791: Incorrect Authorization in Red Hat Red Hat Build of Keycloak

0
Medium
VulnerabilityCVE-2026-9791cvecve-2026-9791
Published: Thu May 28 2026 (05/28/2026, 03:27:08 UTC)
Source: CVE Database V5
Vendor/Project: Red Hat
Product: Red Hat Build of Keycloak

Description

A flaw was found in Keycloak. An authenticated user with existing organization membership can exploit this flaw by accessing user-facing APIs, such as the account API or by requesting an OpenID Connect (OIDC) token with the 'organization' scope. This allows organization metadata to be disclosed in tokens, even after an administrator has explicitly disabled the Organizations feature, potentially leading to incorrect authorization decisions by resource servers.

CVSS v3.1

Score 4.3medium

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 05/28/2026, 13:03:37 UTC

Technical Analysis

This vulnerability in Red Hat Build of Keycloak allows an authenticated user who is a member of an organization to exploit user-facing APIs such as the account API or request an OpenID Connect token with the 'organization' scope. Despite an administrator disabling the Organizations feature, organization metadata can still be disclosed in tokens. This incorrect authorization flaw could cause resource servers to make authorization decisions based on outdated or unintended organization information.

Potential Impact

The impact is limited to the disclosure of organization metadata in tokens to authenticated users with existing organization membership. This could lead to incorrect authorization decisions by resource servers relying on this metadata. There is no indication of privilege escalation, denial of service, or data integrity impact. The CVSS score of 4.3 reflects a low to medium confidentiality impact with no integrity or availability impact.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory at https://access.redhat.com/security/cve/CVE-2026-9791 for current remediation guidance. No official fix or temporary workaround is currently documented in the provided advisory content. Administrators should monitor the vendor advisory for updates and consider restricting access to affected APIs or scopes if feasible until a fix is available.

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Technical Details

Data Version
5.2
Assigner Short Name
redhat
Date Reserved
2026-05-28T03:07:29.305Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
null
Vendor Advisory Urls
[{"url":"https://access.redhat.com/security/cve/CVE-2026-9791","vendor":"Red Hat"}]

Threat ID: 6a1839bbe29bf47b50eaa21c

Added to database: 5/28/2026, 12:48:59 PM

Last enriched: 5/28/2026, 1:03:37 PM

Last updated: 5/29/2026, 6:11:02 PM

Views: 23

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